The engine compressor control system is used to both control the flow of air through the engine and facilitate the operation of variable stator blades, and is comprised of several components such as governors, valves, actuators, and linkages.

A. In STE, a unit started with "topic sentence" is to instruct the main topic.

B. The "topic sentence" starts to tell the readers the topic of the paragraph in STE.

C. In STE, a paragraph starts with a “topic sentence” which tells the reader what the topic of that paragraph is.

A. A maximum distance of 50 feet is required between consumable materials and the work area.

B. Keep flammable materials at a minimum distance of 50 feet from the work area.

C. Explosive materials must be kept at least 50 feet away from the work area.

A. 发行人栏目，出版物名称，飞机型号和发行或修订日期都应该出现在活页文件页面中。

B. 制造商的刊头、出版物标题、飞机型号和发行或修订日期必须出现在活页文件的所有页面上。

C. 生产商发行人栏目，出版物名称，飞机类型和发布或修订日期都应该出现在活页文件所有页面中。

A. 给机械工分配不同的维修任务。

B. 给工程人员分配不同的操作任务。

C. 给技术人员分配不同的维修任务。

A. Thus, the more words there are in a cluster, the more difficult it is to understand.

B. Therefore, the more words are there in a phrase, the more difficult it is to understand.

C. So, the more nouns in a phrase, the harder it is to understand.

A. 如果电瓶需要断电，则断掉电源。

B. 如果电瓶需要充电，则继续接通电源。

C. 如果需要更换电瓶，则接通电源。

A. If the cable twists, disconnect the two connectors.

B. If the wire bents, break the two connectors.

C. If the cable wire breaks, disconnect both ends of the connectors.

A. The shim is t,which is thick by calculating x and y.

B. Calculate the shim,the result of the thickness is x-y .

C. The thickness of the shim is thus calculated: t=x-y.

A. 在记录发动机故障时写下发动机温度。

B. 把温度写在发动机记录卡上。

C. 温度信息需要参考发动机记录卡。

A. 降低系统温度。

B. 释放系统压力。

C. 解除系统警告。