使用祈使语气来书写指令。

A. When it is unlikely that the temperature decreases to -20 ℃, remove the batteries.

B. If it is possible that the temperature will decrease to -20 ℃, remove the batteries.

C. If it is possible that the temperature will decrease to -20 ℃, cut the cells.

A. The CAP is not intended to change or replace any portion of the applicable Airplane Maintenance Manual or Service Letters.

B. The CAP is developed to change or place some part of the applicable Airplane Maintenance Manual or Service Letters.

C. Revising or replacing any part of the serviceable Airplane Maintenance Manual or Service Bulletin is not the main purpose of the CAP.

A. Tool is adjacently available for the installation procedure.

B. Tool is subsequently available for the installation procedure.

C. Tool is subsequently available for the installation task.

A. 系统中用于指示燃油流量、温度和压力的部分，包括传感器、指示器等。

B. 系统中用于指示燃料使用量、温度和压力的部分。包括变送器、指示器等。

C. 系统中用于指示燃料流量、温度和压力的部分。包括变换器、指示器等。

A. 这些ALIs 是强制性的，未经负责飞机型号证书的FAA 办公室或适用的监管机构的批准，不能更改或删除。

B. 这些ALIs 是指令性的，未经FAA办公室批准不得更改或删除。FAA办公室负责飞机型号证书，或发布适用的管理规章。

C. 这些ALIs 是非常必要的，任何更改或删除必须获得FAA办公室批准，或者其他可以颁发飞机型号证书的监管机构的批准。

A. Turn off all the unnecessary systems.

B. Disconnect all the systems which are not necessary for the test.

C. Disconnect all testing systems as necessary.

A. Spread a thin layer of sealing compound with a brush on the surface of the bare metal.

B. Spray a thin layer of sealing compound on the metal sheet.

C. Apply a thin layer of sealant on the bare metal.

A. 前外机身勤务门止动点缺失。

B. 前外机身勤务门止动点失效。

C. 前外机身勤务门止动点凸起。

A. All tabulations shall own a title in order.

B. All tables shall bear a title with a number.

C. All figures shall have a title with a number.

A. 确保钢索张力正常。

B. 确保锁定线束绷紧。

C. 确保保险丝有张力。