Being able to reduce friction, ball bearings are used extensively in many kinds of modern aircraft.

A. 系统的这个部分用来显示数量、温度和液压油的压力，包括的项目有传输机、指示器和告警系统等。

B. 用来显示液压油的质量，温度和压力的系统部分，包括转换器、指示器和告警系统等元件。

C. 系统中用来指示液压油的油量、温度和压力的部分，包括传感器、指示器和告警系统等组件。

A. If the pump is not suitable to be used, replace it.

B. If the pump is outmoded, replace it.

C. If the pump malfunctions, change the location for it.

A. Normally, it is named “fly by electrical control system”.

B. Normally, we name it “fly by electrical system”.

C. This is commonly referred to as “the flight by wire system”.

A. Add 5 ml of hardener to the compound.

B. Add 5 ml of adhesive to the compound.

C. Put 5 ml of hardener to the component.

A. Definitions in this manual shall be conformed with those in the Federal Aviation Legislations.

B. Definitions in the handbook shall be consistent with definitions contained in the Federal Aviation Regulations.

C. Definitions in the Federal Aviation Regulations shall be consistent with definitions contained in the handbook.

A. Keep the caps off the hoses.

B. Make sure the caps are off from the hoses.

C. Take the caps off the flexible pipe.

A. Ensure that the arrow points in the direction of fluid flow.

B. Make sure that the arrow points in the direction of the fuel flow.

C. Ensure that the arrow points in the direction of fluid supply.

A. 只有主要的变更高高挂起来了。

B. 仅突出显示了主要的变更。

C. 只显示了大部分的变更。

A. 使用探针检查管子以找出堵塞物。

B. 检查探头以确定是否堵塞。

C. 仔细检查管道以清除堵塞。

A. Turn the adjuster clockwise to increase 60 Deg.

B. Turn the adjuster counterclockwise in increments of 60 Deg.

C. Decrease 60 Deg. to turn the adjuster counterclockwise.