27.Each of the two life vests located at L2 entry door flight crew station expired( )

911.Maintenance Practices which are a combination of servicing ,removal/installation ,adjustment/test , inspection/check, cleaning/painting, and approved repairs should follow the Troubleshooting Section( )

910.在紧急情况下,可使用 F-43 燃油替代 F-34 和 F-40 燃油。 ( )

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( )