Do not use fuel with unknown properties.

A. 最佳上升角速度是在尽可能短的距离内提供最多海拔增益的空速。

B. 最佳爬升角速度是使飞机能够在尽可能短的水平距离内高度增加最多的空速。

C. 最佳上升角速度是在尽可能短的距离内传送最大高度增益的空速。

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. When there are too many positive or subtractive pressure in the fuel tanks,the pressure relief valve eliminates damage to the wing structure.

B. When there is too much plus or minus pressure in the fuel tanks,the pressure relief valve previews damage to the wing structure.

C. The pressure relief valve prevents damage to the wing structure when there is too much positive or negative pressure in the fuel tanks.

A. The aircraft safety should be ensured.

B. The flight safety must be assured.

C. The navigation safety must be insured.

A. 制造商可制定程序，供使用CAP时发现的不适航的情况（无论是否包含在CAP中）提供反馈（来自遵循CAP的运营人和维修机构）。

B. 制造商可制定程序，供运营人和维修机构反馈在使用CAP时发现的不适航情况，无论相关部件是否包含在CAP中。

C. 制造商可以建立程序，以提供（遵守CAP的运营商和维修机构）在遵守时发现的不适航情况（无论CAP是否涵盖）的反馈。

A. It is very difficult to determine the effects of corrosion but, as the reports from the CAP inspections are received, the inspection times will be adjusted for any severe problems.

B. It is not easy to decide the affection of corrosion, when the reports from the CAP inspections are received, the inspection duration will be changed for any serious problems.

C. It is very hard to make the decision of the corrosion effects but, if the reports from the CAP inspections are obtained, the inspection times will be arranged in accordance with the severest problem.

A. Handbooks shall be ready to revise in accordance with the specification.

B. In accordance with the specification, manuals should be easy to revise.

C. Handbooks have been already revised, according to the specification.

A. Identify the disassembled parts with tags.

B. To notice the removed parts with the lable.

C. To mark the assembled parts with the cards.

A. 它有一个简单的轴承并且操作在一个常规的速度。

B. 它有一个简单的轴承并且以恒定速度运转。

C. 它有单轴并且以恒定速度运转。

A. Make sure that the cables are bent.

B. Make sure that there is tension in the cables.

C. Make sure that there are twists in the cables.