接通地面电源。

A. In the case of damage to the brackets, continue the procedure.

B. In the absence of damage to the brackets, continue the procedure.

C. In the condition of damage to the brackets, continue the procedure.

A. 当必须理解原理图时，最好使用箭头来画出流动方向。

B. 当需要理解原理图时，应该使用箭头来指示流动方向。

C. 当需要理解计划表时，应该使用线条来指示流动方向。

A. The first step in listing possible causes of each trouble is to show what sections of the system may be at fault.

B. Listing possible causes of each trouble is the first step to show what sections of the system may be failure.

C. The first step in listing which parts of the system are likely to fail is to show the possible causes of each failure.

A. Make sure the probe cover is in good working condition with no evidence of damage.

B. Make sure the probe plug is in good condition and there is no signal of damage.

C. The probe lid is insured to be in ideal condition and out of damage.

A. 分步执行这两个步骤。

B. 依次执行这两个程序。

C. 同时做这两个步骤。

A. 抛光表面，直到它非常有光泽。

B. 打磨表面，直到它非常薄。

C. 在表面非常薄之前润色它。

A. 降低系统温度。

B. 释放系统压力。

C. 解除系统警告。

A. A motor can power all the systems.

B. One generator can power for all the systems.

C. One generator can supply power for all the systems.

A. Release the hydraulic pressure in the accumulator.

B. Release the power pressure in the accumulator.

C. Release the hydraulic pressure in the actuator.

A. 适航指令是从事飞机进行维修时必须使用的程序。

B. 在航空器上执行适航指令时，必须阅读本程序。

C. 适航指令必须是对飞机维修有用的程序。