537.飞行员必须手动启动这个充气循环。( )

400.L1 entry door number 1 floor panel has a 1-inch notch 6 inches from the forward right edge( )

399.确保液压油不会穿透插座。( )

398.Equivalent substitutes can be used( )

397.Individual wire identification codes are established to assist in tracing circuitry ( )

396.Some models have this function, but some do not ( )

395.单向活门是液压或气动部件,允许流体在一个方向上完全流动,但阻止所有反向流动。( )

394.Soak the element for four hours( )

393.A list of Page Effectivity should be provided in the front of each Manual and can be combined with the Table of Contents,or in front of each System/Chapter( )

392.重心随着机翼上的载荷而移动。( )

391.Grease the fasteners( )