English is not often the native language of the readers of technical documentation.

A. Transfer the rod in the contrary directivity.

B. Remove the rod in the contrast direction.

C. Move the rod in the opposite direction.

A. Apply two kindreds of protective compound to shield the sealant from any harm caused by hydraulic fluid.

B. In order to prevent damage to the sealant from hydraulic fluid, it is necessary to apply two layers of protective compound.

C. To prevent hydraulic fluid from drowning the sealant, it is recommended to apply two layers of protective compound.

A. The glideslope path is at a constant angle to the threshold of the runway.

B. The glideslope path is at a variable angle to the first end of the runway.

C. The vertical course path is at a fixed angle to the threshold of the runway.

A. 不要拧紧螺母去压紧它。

B. 不要旋转螺母去校准它。

C. 不要拧松螺母去对准它。

A. A hydraulic pump operates the motor.

B. A fuel pump operates the motor.

C. A hydraulic motor operates the pump.

A. 在释压测试期间，不得开启舱门。

B. 在增压测试期间，确保舱门关闭。

C. 进行水压测试时，确保舱门关闭。

A. 电线代码由电路功能代码、电线编号、电线段字母和电线尺寸组成。通常会添加后缀，表示地线（N）、相位（A、B等）或热电偶材料（铝镁合金等）。

B. 电线代码由电路功能代码、电线编号、电线段字母和电线尺寸组成。通常会添加后缀，表示接地（N）、阶段（A、B等）或热敏电门材料（铝镁合金等）。

C. 电线代码由电路功能代码、电线编号、电线段字母和电线尺寸组成。通常会添加后缀，表示地线（N）、相位（A、B等）或热敏电门材料（铝镁合金等）。

A. The tank recirculating system lets the air in or out of the fuel tanks if necessary.

B. The tank absorbing system lets the air in or out of the fuel tanks as necessary.

C. The tank venting system lets the air in or out of the fuel tanks as necessary.

A. Make sure that the scale is not more than 400 knots.

B. Make sure that the indication is not more than 400 knots.

C. Make sure that the indication is not more than 400 miles.

A. Removal of the cover is necessary.

B. It is necessary to install the cover.

C. It is a must to remove the cover.