281.Use manual procedure if it is not possible to use the automatic control( )

656.When you select terminology or wording, always use a consistent style ( )

655.Back of the title page should be left blank except for items such as a manufacturer’s logo( )

654.Boost pump is an electrically driven centrifugal pump mounted in the bottom of the fuel tanks in large aircraft( )

653.是什么导致的事故仍然是个谜。( )

652.通常,发动机被安装在大翼下,可是,对于现代飞机,两个侧发被安装在机身外侧的吊架上。 ( )

651.拆下将变速箱壳连接至发动机的螺栓。 ( )

650.To make the curing process slower, decrease the heat that you apply to the compound( )

649.确保溶剂没在发动机尾喷管附近。 ( )

648.Inspection and modification required from this SB can decrease the possibility of cracks ,which may cause replacement of the units( )

647.天线选择电路选择提供最强接收信号的双工器和天线。应答信号的传输经过所选的双工器和天线。 ( )