The distribution system has these functions.

A. 如果你低下头去安装上阻力杆，在收起期间将撞击到下阻力杆。

B. 如果你顶部朝下地安装上阻力杆，在收起期间它将撞击到下阻力杆。

C. 如果你反向地安装上阻力杆，在放下期间它将撞击到下阻力杆。

A. Ground Idle Power refers to the power required to run an engine on the ground, as slowly as possible, yet sufficient to ensure satisfactory engine, engine accessory, and airplane operation with a minimum of thrust.

B. Ground Idle Power refers to the power required to run an engine as slowly as appropriate on the ground while still ensuring satisfactory airplane operation with a maximum of thrust of engine and engine accessory.

C. For Ground Idle Power, it determines the minimum power necessary to initiate and maintain safe airplane operation, engine accessory function, and satisfactory engine performance while limiting the degree of thrust utilized.

A. The airflow goes along the top and bottom surfaces of the slats.

B. The airflow can go between the top and bottom of the slats.

C. The air flows to the top and bottom of the slats＇ surfaces.

A. The clocks get power from the 28v AC hot battery bus and via the CLOCK circuit breaker.

B. The clocks get power from the 28v dc hot battery bus through the CLOCK circuit breaker.

C. The clocks is through the CLOCK circuit breaker powered from the 28v dc hot battery bus.

A. Correct situation is important because it shows how the different parts of the text are relied and to prevent ambiguity.

B. Correct punctuation is important because it shows how the different parts of the text are related and to prevent ambiguity.

C. Correct punctuation is important because it shows how the different parts of the text are related and to prevent ambitious.

A. 排气系统指将发动机燃气排出机外的组件和部件。

B. 排气系统指将发动机引气导入机身的装置和组件。

C. 引气系统指将发动机废气导出机外的装置和组件。

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. 飞机的总体布局应该用一幅比例尺线图来表示，该图由平面、侧面和正面视图组成，在单页上按垂直顺序显示。

B. 飞机的总体布局应包括平面、侧面和正面视图，在单页上按平行顺序显示。

C. 飞机的总体布局应用图片来表示，包括平面、侧面和正面视图，在双页上按垂直顺序显示。

A. Two controversial ways can be chosen to do the test, either with the Central Maintenance Computer System through a the MCDU, like you have probably learned already, and with a test switch on the VOR receiver in the avionics compartment.

B. You can do the test following procedures -- with the Central Maintenance Computer System by the MCDU, you have probably learned already, and with a test switch on the VOR receiver in the avionics compartment.

C. The test can be done in either way below-- using the Central Maintenance Computer System via the MCDU, as you have probably already learned, or using a test switch on the VOR receiver in the avionics compartment.

A. Make the attitude of the valves the same.

B. Make the positions of the valves agree.

C. Make the altitude of the valves agree.