395.Airworthiness Directive is procedure that must be used when performing maintenance on an aircraft.

A. When the required maintenance procedure is not very long and fairly simple,the above combination can be grouped under a title which is called maintenance practice.

B. When the required maintenance procedure is not lengthy and is relatively simple,a combination of the above may be grouped under one heading and called maintenance practices.

C. When the required maintenance procedures are not very long and comparatively simple,the above combinations can be bound under one subject,calling maintenance practices.

A. 相对时间内的的生产效率就是相对生产率.

B. 速率是速度在一定时间的变化.

C. 加速度是速度随时间的变化率.

A. 如何解释处理潜在问题和紧急情况。

B. 解释如何识别潜在问题和处理紧急情况。

C. 可能的问题和紧急情况需要得到解释。

A. 为了保证飞机的适航性,飞机被推荐了检查程序。

B. 推荐的检查方案随飞机一并交付,以保证其适航性。

C. 飞机交付了推荐的检查程序,以保持它们的适航性。

A. Carry on with the test if the pressure supply is not available.

B. Ignore the test if the pressure supply is strengthened.

C. If the pressure supply stops,cancel the test.

A. The fire-proof materials and seals are mounted on or about the power unit.

B. The fire-resistant partitions and seals are mounted on the power unit.

C. The fire-resistant partitions and seals are mounted on or about the power package.

A. 确保没有剪断操纵钢索。

B. 确保没有关断控制电源。

C. 确保没有连接控制电缆。

A. Use a fan to suck the gases.

B. Use a turbine fan to remove the gases.

C. Use a fan to remove the gases.

A. Every model has this function.

B. This function is applicable to all models.

C. Not all models have this function.

A. Make sure that the mark on the bolt is aligned with the mark on the handle.

B. Make sure that the mark on the bolt is level with the mark on the handle.

C. Make sure that the mark on the bolt is parallel to the mark on the handle.