A position transmitter is located below the PCUs.

A. 仅在真正需要时才会使用被动时态。

B. 当真正需要时仅使用被动时态。

C. 当真正需要时仅使用主动时态。

A. Do not let the flame become solid.

B. Never let the foam become liquid.

C. Do not let the foam become solid.

A. 制造商要求使用良好的气流在一个区域内制备混合物。

B. 制造商建议在通风良好的区域制备混合物。

C. 制造商强调良好的气流区域可以制备混合物。

A. The removal/installation portion shall state clearly the sequence of steps required to remove and reinstall a component or unit. This portion shall also state precautions to be obeyed.

B. The removal/installation portion shall state clearly the sequence of steps required to remove and reinstall a component or unit. This portion shalln’t include precautions to be obeyed.

C. The removal/installation portion shall hardly state the sequence of steps required to move and reinstall a component or unit. This portion shall also include precautions to be watched.

A. 描述飞机电源系统时，应提供相关限制、警告和操作提示。

B. 描述飞机电源系统时，应解释相关束缚、警示和操作提示。

C. 描述飞机电源系统时，应提供相关限制、警告和操作警示。

A. The wing tanks and the center tank have the same rate of supply of fuel.

B. The rate of supply of fuel from the wing tanks to the center tank is equal.

C. The fuel supply rate from all wing tanks and the center tank is the same.

A. 当清洁带有绝缘层的喷管或排气锥时要小心。

B. 当移动带有隔离层的喷管或排气锥时要小心。

C. 当移动带有绝缘层的喷管或排气锥时要小心。

A. These tests need no special equipment or facilities except those installed on the aircraft, and are like the tests performed by flight crews.

B. These tests need some special equipment or facilities that are not installed on the aircraft. And these tests are the same to the tests performed by flight crews.

C. These tests need special equipment or facilities that are installed on the aircraft, and are identical with the tests performed by flight crews.

A. 起落架收上时，不要超过此速度。

B. 起落架伸出时，不要超过此速度。

C. 起落架伸出时，不要低于此速度。

A. 描述飞机燃油系统时，应说明交替供油和燃油运输（如适用）。

B. 描述飞机燃油系统时，应提供交输供油和燃油传输（如适用）相关描述。

C. 描述飞机燃油系统时，应说明交叉供油和燃油传递（如适用）。