M6维护技术基础-4
**** Hidden Message ***** <P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="mso-spacerun: yes"></SPAN> </P><P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>1</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">美国民航运输协会<SPAN lang=EN-US>ATA100</SPAN>规范<SPAN lang=EN-US>21-49</SPAN>章是有关飞机<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>3<SPAN style="mso-tab-count: 1"> </SPAN><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></SPAN></B></P>
<P style="TEXT-INDENT: 21pt; MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 2.0" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">基本维护程序<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>飞机结构<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">飞机系统<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN>发动机<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>2 </SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">材料的弹性模量<SPAN lang=EN-US>E</SPAN>表示什么?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>1<o:p></o:p></SPAN></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">材料发生单位弹性应变时所需要的应力</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">单位应力在材料中所引起的弹性应变。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">材料抵抗塑性变形的能力<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">材料抵抗变形的难易程度,弹性模量越小,材料的刚度越大。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>3 2024</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">铝合金铆钉在使用前进行热处理并在时效前进行铆接的目的?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>3<o:p></o:p></SPAN></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">变硬和增加强度<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>加速时效硬化<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">使之软化以便于铆接</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>消除内部应力<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>4<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">试车时飞机<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>1<SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">必须迎风停放<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">必须顺风停放<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>必须侧风停放<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>可以任意停放<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>5<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">露天顶升航空器时规定<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>1</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">应迎风停放</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">应顺风停放<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>应侧风停放<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>任意停放<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 仿宋_GB2312; FONT-SIZE: 12pt; mso-hansi-font-family: 宋体" lang=EN-US>6<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt">金属材料的硬度是衡量材料软硬程度的指标。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>1|2|4</SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 仿宋_GB2312; FONT-SIZE: 12pt; mso-hansi-font-family: 宋体" lang=EN-US><o:p></o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">硬度值大,材料的强度极限也大</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">根据材料的硬度值可以估计出材料的耐磨性</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">通常用布氏硬度测试法测试成品件的硬度。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">布氏硬度测试方法形成的压痕面积大。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>7<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">奥氏体不锈钢的特点?<SPAN lang=EN-US>2<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在常温下是单相奥氏体组织,没有磁性,强度和硬度很高。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">在氧化性介质中产生晶间腐蚀,多数是由于热处理不当造成的。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在氯化钠溶液中中产生晶间腐蚀,多数是由于热处理不当造成的。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在常温下是单相铁素体组织,没有磁性,强度和硬度不高。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>8<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">铝合金进行淬火热处理后,时效处理之前的过饱和固溶体的性能如何?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>4</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">强度、硬度高,塑性差。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">强度比退火状态略高一些,塑性好,并且很稳定。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">强度比退火状态低,塑性好,并且很稳定。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">强度比退火状态略高一些,塑性好,但不稳定。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>9<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">铝合金的人工时效与自然时效相比<SPAN lang=EN-US>:<SPAN style="mso-tab-count: 1"> </SPAN>4</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">人工时效是把淬火后的铝合金放在室温下进行时效<SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN></SPAN>时效过程慢 时效温度无法控制 <SPAN style="COLOR: red"><SPAN style="mso-spacerun: yes"> </SPAN>时效过程快<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>10<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在铝合金<SPAN lang=EN-US>2024-O</SPAN>,编号中字母<SPAN lang=EN-US>O</SPAN>的含义是<SPAN lang=EN-US>:<SPAN style="mso-tab-count: 1"> </SPAN>3</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">固溶处理<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>加工硬化<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">退火处理</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>固溶热处理和人工时效<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>11<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">影响固溶处理时保温时间的主要因素是<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>2<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">材料的种类<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">材料的厚度</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>材料的使用场合<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>材料的大小<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>12<SPAN style="mso-tab-count: 1"> </SPAN>ZL102</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">表示</SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>4<o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">序号为<SPAN lang=EN-US>1</SPAN>的铝<SPAN lang=EN-US>-</SPAN>铜系铸造铝合金。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>序号为<SPAN lang=EN-US>1</SPAN>的铝<SPAN lang=EN-US>-</SPAN>镁系铸造铝合金。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">序号为<SPAN lang=EN-US>2</SPAN>的铝<SPAN lang=EN-US>-</SPAN>铜系铸造铝合金。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">序号为<SPAN lang=EN-US>2</SPAN>的铝<SPAN lang=EN-US>-</SPAN>硅系铸造铝合金。</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>13<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">与硬铝合金相比,超硬铝的<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>4<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">强度极限比较低而屈服极限比较高。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>强度极限比较高而屈服极限比较低。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">强度极限和屈服极限都比较低。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="COLOR: red"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></SPAN><SPAN style="COLOR: red">强度极限和屈服极限都比较高。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>14<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">关于航空上常用的酚醛塑料,下列说法哪些是正确的?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>3|4<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">酚醛塑料是以酚醛树脂为主要成分的热塑性塑料。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>溶剂对酚醛塑料的侵蚀作用很大。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">酚醛塑料具有良好的绝缘性</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">石棉胶木常用来制作刹车片、摩擦盘等。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>15<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">复合材料的增强纤维对复合材料性能有哪些影响?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>2|4<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">增大增强纤维的直径可以改善复合材料的疲劳性能。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">为复合材料提供了破损安全性。</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">使复合材料具有塑性材料的特性。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN></SPAN><SPAN style="COLOR: red">选用增强纤维的铺设方向和层数,使复合材料具有可设计性。</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>16<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">轮胎充气压力不符合要求,会对轮胎造成怎样的损伤?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>3</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">充气压力过低,会减少轮胎的疲劳寿命。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>充气压力过低,会使轮胎承受的载荷加大。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">充气压力过高,会使轮胎的减震性能变差。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">充气压力过高,会使轮胎产生鼓包、脱层和爆胎等现象。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>17<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">以下哪种材料不是复合材料<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>3<SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">玻璃纤维增强塑料<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>蜂窝夹层结构<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">碳纤维</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>KFRP<o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>18<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">下列哪些是环氧树脂塑料的特点?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>2<SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">绝缘性差<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">不容易受到溶剂的侵蚀。</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>环氧树脂成型收缩率大<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>环氧树脂强度低<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>19<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在清除机体表面漆层时应注意什么<SPAN lang=EN-US>?<SPAN style="mso-tab-count: 1"> </SPAN>3|4</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在清除铆钉头或缝隙上的漆层时,要反复涂抹漆层清除剂,可用钢丝刷子刷。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">清除漆层要使用漆层清除剂进行浸泡,不能用塑料刮削器刮削漆层。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">必须用较厚的铝箔将不要清除漆层的部位遮盖住。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">必须对机轮轮胎、密封剂等进行保护,防止油漆清除剂和它们接触。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>20<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">评估飞机结构的腐蚀等级应考虑哪些情况?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>2|3|4</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">清除腐蚀产物可以采用的方法。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: red"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></SPAN><SPAN style="COLOR: red">腐蚀在相继检查过程中出现的情况。</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">已发生腐蚀对结构件承载能力的影响。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">发生腐蚀的影响范围及代表性<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>21<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">落在金属表面的粉尘、颗粒影响金属腐蚀的原因是什么?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>1|2|3</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">粉尘、颗粒本身具有腐蚀性。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">粉尘、颗粒与金属表面之间的缝隙中形成了氧浓差电池,加快了金属腐蚀。粉尘、颗粒可以吸收空气中的水份。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">粉尘、颗粒会导致应力腐蚀。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>22<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">关于氧浓差电池下列说法哪些正确?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>1|2|3</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">氧浓差电池是宏观电池。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>氧浓差电池经常在缝隙处形成。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; COLOR: red; mso-bidi-font-size: 10.5pt">金属与含氧量不同的溶液接触会形成氧浓差电池。</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">氧浓差电池是微观电池。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>23<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">关于应力腐蚀 ,下列哪个说法是正确的?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>2<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">铝合金在水蒸气中不会发生应力腐蚀。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">纯铝不会发生应力腐蚀断裂。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN></SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">合金在任何腐蚀介质中都会发生应力腐蚀。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>金属材料承受压应力就会发生应力腐蚀。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><o:p> </o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US>24<SPAN style="mso-tab-count: 1"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">在飞机受力结构中常见的铆钉破坏形式是什么?<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN>3</SPAN></SPAN></B><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt" lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN><o:p></o:p></SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt">拉伸破坏。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>弯曲破坏。<SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN><SPAN style="COLOR: red">剪切破坏。</SPAN><SPAN lang=EN-US><SPAN style="mso-tab-count: 1"> </SPAN></SPAN>压缩破坏。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P> 路过!路过!路过!路过!路过! 楼主辛苦了 求第一章题库 学习一下,谢谢。 值得拥有,嘻嘻 多谢楼主,楼主辛苦
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