A filter prevents contamination of the components in the system.

A. 当压气机机匣被冷却后，压气机叶片间距变小。

B. 当涡轮机匣被冷却后，涡轮叶尖距变小。

C. 当涡轮机匣被冷却后，涡轮叶片间距变小。

A. Necessary information by manufacturer should be provided in this chapter to maintain, overhaul or major repair the aircraft so as to properly level it during the life of the aircraft.

B. In order to properly level the aircraft when performing repair, overhaul or major repairs during the life of the aircraft, this chapter should provide all considered information by manufacturer.

C. This chapter shall provide that information considered necessary by the manufacturer to properly level the aircraft for any of the various maintenance, overhaul or major repairs which might become necessary during the life of the aircraft.

A. Check whether the linkage moves slightly or not.

B. Examine the linkage for smooth movement.

C. Inspect the status of the linkage movement.

A. The connector has 32 contacting points.

B. The contact has 32 contactors.

C. The contactor has 32 contacts.

A. 此材料有良好的防腐作用。

B. 这种材料被证明具有优异的防退化性能。

C. 现有涂料的防腐效果非常显著。

A. 程序应在每章内按编号顺序进行准备，并有适当的主次科目标题，无需从新的页面开始。

B. 程序应在每章内按照主次标题和参考号的形式进行编写，不需要从新的页面的开头开始。

C. 程序应在每章内按参考编号顺序编制，并有适当的主、副标题，而无需从新页的顶部开始。

A. 所有的流量控制组件，如检查活门、燃油泵、油滤，应该包含在内。

B. 所有的流量控制装置应该包含在内，如单向活门、燃油泵、蓄压器。

C. 所有的流量控制装置应该包含在内，如检查活门、燃油泵、蓄压器。

A. This is the portion of the systems used to generate, regulate, control, and indicate AC electrical power.

B. Here is that portion of the systems used to generate, regulate, control, and indicate AC electronic power.

C. That is the portion of the systems used to generate, increase, control, and indicate AC electrical power.

A. The turbo engine includes a compressor bleed system, air cooling system, hot air system, and engine starting system. The compressor bleed system can control the airflow through the engine, and the air cooling and hot air systems are used for engine anti-icing.

B. The turbo engine includes a compressor exhaust system for controlling the airflow through the engine, a cooling air system for engine icing, and an engine starting system.

C. The turbine engines include compressor bleed systems used to control flow of air through the engine, cooling air systems, heated air systems for engine anti-icing, and engine starting systems.

A. “力臂”是物体重心到基准面的水平距离。

B. “力臂”是物体重心到参考面的垂直距离。

C. “力矩”是物体中心到参考基准面的距离。