标题: Airman Knowledge Test Question Bank [打印本页] 作者: 航空 时间: 2011-6-13 18:13:30 标题: Airman Knowledge Test Question Bank
作者: 航空 时间: 2011-6-13 18:13:45
1 .A02A AMA Which statement about wood decay is correct? A) Decay that occurs before the wood is seasoned does not affect the strength of the finished piece. B) A limited amount of certain kinds of decay is acceptable in aircraft woods since decay affects the binding between the fibers and not the fibers themselves. C) Decay is not acceptable in any form or amount. 2. A03A AMA Compression failures in wood aircraft structures are characterized by buckling of the fibers that appear as streaks on the surface A) at right angles to the growth rings· B) parallel to the grain. C) at right angles to the grain. 3. A03A AMA Glue deterioration in wood aircraft structure is indicated A) when a joint has separated and the glue surface shows of the wood with no wood fibers clinging to the glue. B) when a joint has separated and the glue surface shows and/or wood fibers clinging to the glue. C) by any joint separation. only the imprint pieces of wood 4 A03A AMA When patching a plywood skin，abrupt changes in cross sectional areas which will develop dangerous stress concentration should be avoided by 作者: bocome 时间: 2011-7-30 19:39:08