531.The cover title and applicable airplane designation shall be prominently displayed on the cover or spine [or both] of the Handbook( )

406.Any adjustments/tests that are necessary as part of installation or reactivation procedures shall be in the text in proper sequence( )

405.Move the probe upstream and measure the temperature again ( )

404.The approved words were selected because they were simple and easy to recognize ( )

403.指针沿刻度垂直移动 ( )

402.Duct brackets attach the overhead distribution duct to the ceiling supports( )

401.驾驶舱初始紧急呼叫必须按下头顶面板上的紧急呼叫按钮。这将初始驾驶舱和所有客舱站位之间通讯的共享连 接。( )

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 ( )