MAKE SURE THAT THE TOILET ASSEMBLY FLUSHES CORRECTLY.

A. Write the instructions in the mandatory mode.

B. Write the instructions in the imperative form.

C. Write the instructions in the active mode.

A. The toxic conditions are given in Paragraph 2.0.

B. All the test result are given in Paragraph 2.0.

C. All the test conditions are given in Paragraph 2.0.

A. 循环系统使用一个风扇使空气进入客舱支配总管。这个系统降低了空调组件的供气量。

B. 回流系统使用一个风扇使客舱空气进入混合总管。这个系统减少所需供气空调组件的数量。

C. 再循环系统使用一个风扇使客舱空气进入分配总管。这个系统减少空调组件所需供气量。

A. Clean window using much quantities of soap and water.

B. Clean window using liberal quantities of soap and water.

C. Clean window with large quantities of soap and water.

A. 安全须知的开头要用清晰简单的指令或条件。

B. 安全指令的拟定要清晰、简明或符合条件。

C. 发出清晰、简单的指示或给出条件以启动安全指令。

A. 检查厕所快速增压装置。

B. 检查厕所快速减压装置。

C. 检查厕所定期减压装置。

A. It changed the volts in the transmitter

B. It changes the electrical currents in the transmitter.

C. It changed the electronic currents in the reciever.

A. Obey the procedure if there is no debris in the oil sample.

B. If the fuel is not polluted, go on with the procedure.

C. If there is no contamination in the fuel sample, continue the procedure.

A. If the error is more than 3 degrees, calibrate the glide slope.

B. If the error is more than 3 degrees, calibrate the compass.

C. If the error is more than 3 degrees, calibrate the gyroscope.

A. 速度-高度纠错系统通过修正实际速度尽可能保持飞机安全飞行高度。

B. 通过修正实际速度尽可能保持飞机安全飞行高度的任务由速度-高度纠错系统完成。

C. 速度-姿态修正系统通过修正速度的影响，自动保持安全的飞行姿态。