663.Those removable coverings which extend over and around the power plant assembly ( )

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 ( )

267.Distribution is the system used to induct and distribute air ( )

266.Direction as to who and how to contact technical personnel at the manufacturers Plant, for assistance in repairing or replacing items damaged and not covered by a standard repair ( )

265.按需向液压油箱加液压油 ( )