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

A. 　Listing possible causes of each trouble is to show what sections of the
system may be at fault is the first thing we should do.

B. 　What sections of the system may be at fault depends on the first step
in listing possible causes of each trouble.

C. 　To show what sections of the system may be at fault, listing possible
causes of each trouble is the first thing we should do.

A. 　修理这个组件之前要得到制造商的许可。

B. 　修理这个组件之前要得到航空公司的许可。

C. 　修理这个组件之前要得到局方的许可。

A. 　 Each Chapter or Section is begin with either a general description of
the system or its operation and Description and Operation should be
labeled.

B. 　 Each Chapter or Section is begin with neither a general description
of the system nor its operation and Description and Operation should be
labeled.

C. 　 Description and Operation should be labeled in each Chapter or Section
which is open with both a general description of the system and its
operation.

A. 　ELECTRICAL GROUNDING

B. 　GROUND

C. 　LANDING

A. 　维修手册中准备某些章节的技术数据需要机身制造商和各种其它部件制造商
之间的共同贡献和密切协作。

B. 　编写维修手册某些章节的技术资料时,需要机身制造商和各种其他部件制造商
之间的共同协作。

C. 　机身制造商和各种其他部件制造商可以共同协作以完成维修手册,一些章节的
技术参数的编写工作。

A. 　定位器与跑道中心线对齐,下滑道与跑道出口成一定角度

B. 　航道与跑道中心线对齐。下滑道与跑道入口成恒定角度。

C. 　航道与跑道中心线平行,下滑道与跑道出口成恒定角度。

A. 　APPROVAL

B. 　AUTOMATIC

C. 　AUTHORITY

A. 　Database synchronization is still on.

B. 　Database synchronization is in progress.

C. 　The database is already synchronizing.

A. 　转动凸轮以松开管路

B. 　转动卡以使管路自由移动

C. 　转动卡箍以松开管路

A. 　TAKE

B. 　READ

C. 　SHOW