The moment is the product of the weight of an item multiplied by its arm.

A. 识别出有代码的部件，可以帮助再次正确安装。

B. 用编码标识复合材料，以帮助再次正确安装。

C. 用代码标识部件，以帮助正确地再次安装。

A. Carry on with the test if the pressure supply is not available.

B. Ignore the test if the pressure supply is strengthened.

C. If the pressure supply stops, cancel the test.

A. 一些飞机，尤其是相对简单的飞机，可以不需要CAP，因为飞机维修手册中包含了足够的信息，可以确保飞机在整个使用寿命中保持持续适航。

B. 一些飞机，即一些特别简单的飞机，可能不需要CAP，因为关于这些飞机的有效信息可以确保飞机在整个使用寿命中持续适航，这些信息包含在飞机维修手册中。

C. 一些飞机，特别是相对简单的飞机，可能不需要CAP，因为有充足的信息保持飞机在整个使用过程中持续适航，它们的使用寿命包含在飞机维修手册中。

A. A mixture of fuel and oxygen can cause an explosion.

B. A mixture of fuel and nitrogen can cause an burn.

C. A mixture of gas and oxygen should cause an explosion.

A. The compressing of the spring can cause the valve to open.

B. There is no change of the valve when the spring compresses.

C. After compressing of the spring, the valve goes to closed position.

A. All the related data shall be grouped in a logical manner.

B. A logical method is required to group the unconcerned data together.

C. Divide all the involved data into groups logically.

A. 这是一个很好的喷漆方案。

B. 这是一个很好的除漆程序。

C. 这是一个很好的调色计划。

A. The damper prevents abnormal movement of the control.

B. The control is protected from unusual movements by the damper.

C. The damper prevents sudden movement of the control.

A. Adjust the lever intentionally and reset the system to the neutral position.

B. Move the lever before setting the system to the neutral position again.

C. In case of an inadvertent lever movement, return the system to the neutral position again.

A. 问题的原因来自于燃油系统。

B. 问题的根源在燃油系统。

C. 故障的位置在液压油系统。