To bleed the braking system, operate the hand pump handle through its full travel.

A. Use a solution of foam and water to clean.

B. Clean with bleach and water.

C. Clean with a solution of soap and water.

A. When stop the engine, make sure that the engine decelerates to 500 RPM.

B. If the engine decreases to 500 RPM, you must stop it.

C. When the engine RPM decreases 500, you＇d better stop the engine.

A. With the aid of the component manufacturer, all components in this chapter can be overhauled in any workshops with different qualifications.

B. Without the data supplied by the component manufacturer, it is possible for the most qualified shop to overhaul any components included in this chapter.

C. You must overhaul any or all components in this chapter in an eligible shop on the basis of data provided by the component manufacturer.

A. 系统中用于放出和收上起落架、打开和关闭起落架门的部分，包括作动机构、轮架配平装置、弹簧筒、上下门闩、操作控制装置、活门和马达、钢索、管道等。

B. 系统中用于延伸和缩回起落架并打开和关闭起落架门的那部分。包括刹车、车轮、浮子、上下门闩、操作控制装置、阀门和电机、电缆、管道等。

C. 系统中用于延伸和缩回起落架并打开和关闭起落架门的那部分。包括旋转密封套、防滑装置、压力指示器、上下门闩、操作控制装置、阀门和电机、电缆、管道等。

A. 隔离液压系统之前，做勤务。

B. 在勤务液压系统之前，将其隔离。

C. 在增压液压系统之前，先将其隔离。

A. 如有必要进一步减小钢索张力，可使用松紧螺套。

B. 如有必要进一步降低钢索张力，可使用张力计。

C. 如有必要进一步调节钢索长度，可使用旋转带子。

A. All the related data shall be grouped in a logical manner.

B. A logical method is required to group the unconcerned data together.

C. Divide all the involved data into groups logically.

A. 在外表面上涂抹密封胶。

B. 在外壁板施加载荷。

C. 在外壳上喷涂防锈剂。

A. 曲线半径必须至少为8mm。

B. 圆的直径必须最小为8mm。

C. 曲线的直径必须最大为8mm。

A. 安全地取下标签并闭合这个跳开关。

B. 取下安全标签和闭合的跳开关。

C. 取下安全标签并闭合跳开关。