This category of technical verbs is only for descriptive texts such as general information, system description and operation texts, and the descriptive parts of service bulletins.

A. If an annunciator panel TRANSIT light fails to illuminate while the corresponding device is in motion, then this light must be considered inoperative.

B. When related device is in operation and if annunciator panel TRANSIT light comes on, so this light does not work.

C. The light is considered to be available if the annunciator panel TRANSIT light goes off when the related device is in motion.

A. 系统中用来生成电流点燃燃烧室和加力燃烧室中油气混合气的那部分。

B. 系统中产生电流以点燃燃烧变大器和推力增大器中的燃料混合物的部分。

C. 系统中产生电流以点燃燃烧变大器和推力缩小器中的燃料混合物的部分。

A. Completely retract the rod slowly and ensure not to touch other components.

B. Slowly protect the bar and guarantee not touching other parts.

C. Slowly extend the rod fully and make sure that it does not touch other parts.

A. 我们的目的是提供持续的、满足工业标准的持续适航标准。

B. 我们的目的是提供一致的、行业标准化的持续适航方案。

C. 我们的任务是提供完整的、行业标准的持续适航计划。

A. 拆卸组件之前，先将系统泄压。

B. 在断开导线之前，给系统放气体。

C. 在断开部件之前，请确保完全停止供气。

A. 这些安全预防措施是在维修区工作的最低要求。

B. 这些安全警告满足维修区工作的全部要求。

C. 这些安全提示有必要做为维修区工作要求。

A. Airline performance data shall be presented in either graphical or tabular formats.

B. Airplane performance data shall be presented in either graphical or tabular formats.

C. Airplane restriction data shall be presented in either graphical or tabular shapes.

A. A surge tank drain single valve is on the outside fuel tank end rib in main tank 1 and main tank 2.

B. A surge tank drain one way value is on the inboard fuel tank end rib in main tank 1 and main tank 2.

C. A surge tank drain check valve is on the outboard fuel tank end rib in main tank 1 and main tank 2.

A. If the tire temperature is unusually high, open the valve.

B. If the tyre pressure is insufficiently high, open the valve.

C. If the tire pressure is unusually high, open the valve.

A. 仅B747刚引进时期，每个月就有4000页必须从手册中删减或增加进手册。

B. 在B747引进时期，仅每个月必须替换或增补的手册就有4000页以上。

C. 在B747刚引进的阶段，仅一个月就需要更换或增加约4000页到手册中。