983. 确保液压油箱内的液压油高于最低液面。

A. Point out that the FAA should be informed after any modifications on airplane to ensure that the airworthiness of the airplane is not effected.

B. Point out that any modifications on airplane may be informed to FAA to confirm the airworthiness of the airplane.

C. Point out that the FAA should be contacted prior to any alterations on airplane to ensure that the airworthiness of the airplane is not violated.

A. If there is a available service bulletin to correct the problem of moisture ingress into the connector cavity, the letter then will be useless.

B. Refer to this letter to help mitigate moisture ingress into the connector cavity even if there is a available service bulletin to correct the problem.

C. If there is a available service bulletin to correct the problem that moisture ingress into the connector cavity, the letter then will provide procedures.

A. Do this procedure again.

B. Repeat this procedure.

C. Do this procedure two times.

A. 另外,它应提供手册中使用的符号、缩略语和术语的定义或解释。

B. 另外,它应提供象征的定义或解释、缩略语和手册中使用的术语。

C. 另外,它应提供符号和缩略语的定义或解释、以及手册中使用的技术。

A. 启动发动机前,确认灭火瓶状态正常。

B. 启动发动机前,确认灭火瓶在正确的位置。

C. 启动发动机前,确认消防梯在正确的位置。

A. 检查时间将根据一些问题进行调整

B. 针对严重问题将调整检査次数

C. 针对严重问理将延长检査时间

A. The output of AND gate is one when either of its inputs is logic one.

B. There is absolute no relationship between the output and input of the AND gate.

C. The output of AND gate is one only when all the inputs are logic one.

A. 烟雾,火焰和二氧化碳检测系统;

B. 烟雾,火焰和一氧化碳检测系统;

C. 烟雾,火焰和碳化物检测系统;

A. 确保副翼向下运动。

B. 使方向舵移动更慢些。

C. 确保升降舵移动缓慢。

A. 将钢索沿逆时针方向固定在调节器、传感器和耦合组件上。

B. 将保险丝沿逆时针方向缠绕在调节器、传感器和耦合组件上。

C. 沿逆时针方向缠绕在调节器、传感器和耦合组件上。