自动推力系统已开启但未运行。

A. 发动机系统包含元件和部件用于控制和改变润滑剂在发动机入口和出口的流动。

B. 发动机系统包含控制和引导润滑油从进口流向出口的组件和部件。

C. 润滑剂靠发动机的元件和部件的控制和引导在发动机里产生流动。

A. Apply two films of protective compound to prevent hydraulic fluid from damaging to the sealant.

B. Apply two layers of protective compound to prevent hydraulic fluid damage to the sealant.

C. Two coats of sealing compound should be applied to prevent hydraulic fluid damage from the sealant.

A. 调节的精度可以改变。

B. 调整后的精度可能会改变。

C. 调节的程序可以改变。

A. Do not open the entry door if the wind-speed is dangerously high.

B. Do not open the cargo door unless there is dangerous wind.

C. Do not open the cargo door if the wind-speed is dangerously high.

A. The swivel nuts on both valves engage threads on an internal stem that loosens or draws tight the valve stem to a metal seat.

B. The rotating nuts on both valves are meshed with the threads on the inner valve stud, so that the valve stud is loosened or tightened to a metal valve base.

C. The swing nuts on both valves engage with the threads on the internal spool, allowing the spool to loosen or tighten to the metal seat.

A. The cover title shall be "Pilot＇s Operating Handbook" or "Polit＇s Operating Handbook and FAA Approved Airplane Flight Manual."

B. The name of the book might be "Pilot＇s Operating Handbook" or "FAA Approved Airplane Flight Manual."

C. The cover could be named as "Pilot＇s Operation Instruction" or "Pilot＇s Operation Instruction and FAA Approved Airplane Flight Instruction."

A. 集气器/喷嘴环包含集气环、排气管道和加力燃烧室管道、可调喷嘴、作动筒、管路、连接装置、位置指示器、告警系统等。

B. 排气系统包含集气环、废气和推力增强管道、可调喷管、作动筒、管路、连动装置、位置指示器、告警系统等。

C. 集气器/喷嘴包含集气环、废气和推力增强管道、固定喷管、作动筒、管路、连动装置、位置指示器、告警系统等。

A. 拆除校装销和设备，以阻止控制舵面的自由运动。

B. 拆除校装销，安装能够阻止控制舵面自由移动的设备。

C. 拆除能够阻止控制舵面自由移动的校装销和设备。

A. Thus, the more words there are in a cluster, the more difficult it is to understand.

B. Therefore, the more words are there in a phrase, the more difficult it is to understand.

C. So, the more nouns in a phrase, the harder it is to understand.

A. Three computers collect data and put them together on the data link to the display unit.

B. Three computers collect data and put them together on the data upload to the display unit.

C. Three computers collect data and put them together on the data conveyed to the display unit.