529.反推是把尾喷管的反向形成的力( )

408.In aviation , it is mandatory to correctly understand maintenance and operation documentation to make sure that systems operate safely and correctly and to protect human lives ( )

407.Center of gravity is the point at which an airplane would balance if suspended Its distance from the reference datum is: found by dividing the total moment by the total weight of the airplane ( )

406.English is the international language of science, technology, and human relations( )

405.陀螺仪的突然操作会导致水平安定面发生不必要的移动。 ( )

404.你可以使用除了分号之外的所有标准英语的标点符号 ( )

403.如果杆端轴承的径向磨损大于 0010 英寸,在接下来的 10 个飞行循环或 25 个飞行小时内[先到为准]将其报废。( )

402.This Section should contain a recommendation that airplane operator establishes contact with the dealer or certified service station for service and information( )

401.Attach the two ends of the hoses ( )

400.The sealant burns at 109 deg ( )

399.The first step in listing possible causes of each trouble is to show what sections of the system may be at fault ( )