Corrosion can have many causes.

A. 根据制造商的意见，本章节描述飞机时提供了最有用的信息给最有可能驾驶飞机的飞行员。

B. 本章节将按照制造商考虑的方式描述飞机，以使最有可能操作该飞机的飞行员获得最多的信息。

C. 制造商考虑在本章节中描述飞机时提供更多的信息，以帮助飞行员更有效地操作飞机。

A. Schematic diagrams may be used to indicate "flow" and to illustrate the operation of systems such as air control, electrical, fluid power, fuel and turbosystems.

B. Principle charts can be intended to show "flow" and explain the operation of systems as well as air control, electrical, hydraulic power, fuel and turbine systems.

C. Schematic diagrams can be employed to show "flow" and to explain the operation of systems along with air control, electrical, fluid power, fuel and turbosystems.

A. 注意：当您取出探头时，不要让它们相互接触。

B. 警告：取出探头时，不要让它们相互接触。

C. 注意：当您取出指针时，不要让它们相互接触。

A. 本制度不会取代CAP中未包括事项的常规沟通渠道。

B. 本系统无法超越CAP涵盖的常规沟通渠道。

C. 未包括在CAP中的常规沟通渠道不能代替本制度。

A. The Emergency Procedures Section shall include at the beginning a check list with regard to order of action when sequence is essential to safety.

B. When the sequence of actions affects safety, a list of Safety Precautions should be provided at the beginning of an Emergency Procedure Section.

C. The sequence of actions is critical to flight safety, so a safety checklist should be provided at the beginning of an Emergency Procedure Section.

A. 获取一桶燃油，并做一项含水量测试。

B. 取一份燃油样品，并进行一项水污染测试。

C. 获取一份燃油资料，并分析水含量。

A. 把手放在风扇上感受震动。如果风扇是震动的，说明风扇是通电的。

B. 把手放在风扇上感受一下是否有震动。如果你感觉到震动，说明风扇是工作的。

C. 风扇在震动，把手放在风扇上是不安全的。当你感到震动时，风扇是工作的。

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. Each of the two life vests located at L2 entry door flight crew station is damaged.

B. Each of the two life vests located at L2 entry door flight crew station is out of time limit.

C. Each of the two life vests located at L2 entry door flight crew station is out of service.

A. 把调查结果写在改进表上。

B. 把试验结果写在测试表上。

C. 把校准结果写在校正表上。