29.Make sure that the tension in the cables is correct ( )

909.快速拉动氧气面罩开始供氧( )

908.The exit doors used, to facilitate evacuation that are not normally used for exit( )

907.If the drain hole is clogged, clean it ( )

906.Long noun clusters are not easy to understand because the words in the noun cluster can connect to each other in different way ( )

905.飞行计划的最高商度将受到影响。 ( )

904.In this example, we calculated the data applicable only to a Type B unit ( )

903.Use the manual control in an emergency( )

902.It is possible that local fire codes, and standards make it necessary to use more restrictive procedures than those given in the subsequent steps( )

901.缓慢地把 RAT 完全放出,并确保它不接触其他部件。 ( )

900.在高压环境下工作时,应遵守安全注意事项。( )