428.TYPE CERTIFICATE

A. 　Deflate the system before you disconnect the components.

B. 　Bleed the system before you disconnect the components.

C. 　Bleed the system before you interrupt the components.

A. 　如果组件变得很干净,那么组件的寿命将会增加。

B. 　如果组件变得很脏,那么将降低组件的使用率。

C. 　如果组件变得很脏,那么组件的寿命将会缩短。

A. 　如果列出了大量项目在电气示意图上,则项目应按逻辑顺序呈现,如飞机上
或示意图中项目的排列顺序。

B. 　在电气示意图上,如果列出了大量项目,则项目应按逻辑顺序呈现,如飞机
上或示意图中项目的排列顺序。

C. 　如果列出了大量项目,例如电气示意图上的项目应按逻辑顺序呈现,如飞机
上或示意图中项目的排列顺序。

A. 　 LOOK

B. 　 SEE

C. 　 WATCH

A. 　这个手册需要花费两个小时读完。

B. 　做这个程序需要两个小时。

C. 　两个小时必须完成这个程序。

A. 　CHANGE

B. 　CONVERT

C. 　TURN

A. 　Put

B. 　Move

C. 　Set

A. 　 If you must add pages after the ahead printing, then the page should
have the number of the preceding page and an alphabetic suffix.

B. 　 In the event a page must be added pursuant to the original printing,
the page shall carry the number of the preceding page with a letter suffix
added.

C. 　 If you must add pages after the individual printing, then the page
should contain the serial number of the preceding page,and add a suffix
letters.

A. 　能防止自由运动的活塞在套筒中有划痕。

B. 　刻痕能阻止活塞在套筒中的自由运动。

C. 　刻痕能防止自由运动的活塞在套筒中。

A. 　The basis for assuring an airplane remains airworthy and safe to operate
is to combine the manufacturer’s requirements with sound inspection and
maintenance practices.

B. 　To ensure airworthiness and safe operation of an airplane, it is
essential to follow the manufacturer’s instructions in the utilization
of airplane, and perform sound inspection and maintenance as well.

C. 　Airworthiness and safe operation are fundamental to aircraft
utilization as required by the manufacturer, so sound inspection and
maintenance practices are carried out.