660.Do not extend or retract landing gear above this speed ( )

277.That portion of the system and its controls which supply cooled air to the cabin Includes items such as the cooling unit, indicating systems related to the cooler operation , etc , as applicable Does not include temperature control and indicating systems ( )

276.用于封闭起落架舱门的门结构。如果门是整体结构,则只能在第 32 章中显示。( )

275.系统中用于消散静电的部分。 ( )

274. In addition ， the covers of all handbooks will display the following statement prominently on the cover ＇THISHANDBOOK INCLUDES THE MAINTENANCE INFORMATION REQUIRED TO BE AVAILABLE BY FAR PART___＇ (Insert Part 23 or25 as appropriate)

273.相对简单的组件可能不需要描述和操作。( )

272.The water quantity transmitter is fragile( )

271.Replenish the hydraulic reservoir as necessary( )

270.遵守拖飞机工作程序。( )

269.涡轮发动机的主要工作原理是压缩大量空气,使之与燃料混合并燃烧。 ( )

268.The Nitrogen Generation System reduces the oxygen content of the air mixture in the center tank to a level which will not support combustion ( )