确保在滑油中没有金属粒子。

A. 速度-高度纠错系统通过修正实际速度尽可能保持飞机安全飞行高度。

B. 通过修正实际速度尽可能保持飞机安全飞行高度的任务由速度-高度纠错系统完成。

C. 速度-姿态修正系统通过修正速度的影响，自动保持安全的飞行姿态。

A. 货舱空气的不流通是个重要的问题。

B. 客舱空气污染是一个重要的问题。

C. 处理机舱空气是个重要的问题。

A. 如果没有液压动力放下前起落架，起落架的重量和气流会将其推至放下位。

B. 如果液压动力未将前起落架放下，起落架的重量和重力会将其放下。

C. 液压动力可以放下前起落架，起落架的重量和气流也可以将其推至放下位。

A. Always keep the brightness control on the LCD display at maximum.

B. Always keep the brightness knob of the LCD monitor set to its maximum dimness position.

C. Always adjust the test knob of the LCD monitor set to maximum brightness position.

A. 确保在表1中给定的范围内进行测量。

B. 确保在表1中给定的范围内进行调节。

C. 确保按照表1中的数值进行校准。

A. Move any of the four bolts.

B. Remove one of the four bolts.

C. Remove each of the four bolts.

A. 描述飞机电源系统时，应提供相关限制、警告和操作提示。

B. 描述飞机电源系统时，应解释相关束缚、警示和操作提示。

C. 描述飞机电源系统时，应提供相关限制、警告和操作警示。

A. The turboprop engine controls include linkages and controls to the coordinator or equivalent and from the coordinator or equivalent to the propeller governor, fuel control unit, or other units being controlled.

B. The control device of a turbojet engine includes a linkage mechanism and control device to a coordinator or equivalent device, as well as a linkage mechanism from a coordinator or equivalent device to a propeller governor, fuel control component, or other controlled components.

C. The turboprop engine controls include a coordinator or equivalent device, a linkage mechanism, a control device, a propeller governor, a fuel control component, or other controlled components.

A. Values in the limited range should not include parameters or variables not mentioned in the manual.

B. The specification of a given range of values in the manual excludes parameters and variables.

C. The range of values should not exceed the parameters or variables given in the manual.

A. In an emergency, the one-shot battery supplies DC power.

B. The one-act battery supplies AC power during emergencies.

C. The one-side battery provides DC power during emergency situations.