2973. A flight starts when the air mode is sensed for longer than 30 seconds( )

1327. IF YOU [ )THAT THE HYDRAULIC PUMP DOES NOT OPERATE CORRECTLY, EXAMINE THE PUMP

1326. Though techniques such as shading, crosshatching, screening or similar means are recommended, the use of color is permissible ( )

1325. BE CAREFUL WHEN YOU [ ]PRINTED CIRCUIT BOARDS( )

1324. Each Chapter or Section is to start with a general description of the system and its operation and should be labeled Description and Operation( )

1323. 如果由于腐蚀而无法拆卸螺栓,则使用渗透油。 ( )

1322. Entrance stairs or step operate in conjunction with but are not integral part of entrance doors( )

1321. The control unit is installed aft of the cockpit( )

1320. 当拉下低位的轴承时,可以看到低位的封圈 ( )

1319. If numbered, they should be numbered sequentially and need not follow the numbering in this specification so as to avoid “gaps” resulting from specification material not appropriate to the type of airplane( )

1318. 服务通告中程序的执行是强制的。 ( )