In the description of the airplane＇s Engine, if an engine fire detection or extinguishing system is available, describe, give principle of operation, and explain how to use these.

A. 永久绑定的手册页不会过期。

B. 临时装订的手册页无需标注日期。

C. 永久装订的手册页不需要注明日期。

A. Do not open the container if you are instructed that high pressure is dangerous.

B. If it states on the container that the pressure inside is high, do not open it.

C. If the instructions give a warning about dangerous pressure, do not open the container.

A. 该速度指示仪此段弧线的下限是着陆构型下的最大纵向速度。

B. 该速度指示仪此段弧线的下限是着陆构型下的最大横向速度。

C. 该速度指示仪此段弧线的下限是最大重量情况下着陆构型时的失速速度。

A. A Weight and Moment Limit diagram shall be used to describe the c.g. limits.

B. The maximum weight moment envelope diagram should be used to describe the c.g. limit of the aircraft.

C. A Weight and Moment Limit diagram shall be used to describe the maximum c.g. limit.

A. If the unit is not modified, its service life will be possibly shorter.

B. Without the modification of the unit, its service life is likely shorter than present.

C. Without the modification, it is possible that the service life of this unit will be shorter than usual.

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. 陀螺的突然运转会引起水平安定面不必要的移动。

B. 陀螺的意外操作会引起垂直安定面不必要的移动。

C. 水平安定面的突然移动会引起陀螺的意外操作。

A. Make an estimate of the necessary quantity.

B. Evaluate on the quantity available.

C. Approximate the scale of the quality.

A. The emergency procedures check list should be in concise, abbreviated form designed to remind pilots of items to check without providing details concerning the operation of any system.

B. The normal procedures check list which should be in concise, abbreviated form is designed to tell pilots of items to check without providing details concerning the operation of any system.

C. The content of the emergency procedures check list should be in concise, abbreviated form and its purpose is to remind flight attendants of items to check with providing details concerning the operation of any system.

A. During antenna installation, disregard the direction the alignment arrow is pointing.

B. Align the antenna in the opposite direction in consideration of the alignment arrow in installation.

C. When installing the antenna, make sure the alignment arrow is directed towards the front.