1378.If the shear pin breaks,do an inspection of the towbar.

A. 警告和告诫应置于其适用的文本前,但注释则可以根据需强调的内容置于相应文本前或文本后。

B. 警告和告诫应置于其适用的文本后,但注释则可以根据显示的材料内容置于文本前或文本后。

C. 警告和告诫应置于其适用的文本上方,但注释则可以根据需要强调的文本内容置于其上方或下方。

D. B.警告和告诫应置于其适用的文本后,但注释则可以根据显示的材料内容置于文本前或文本后。

E. C.警告和告诫应置于其适用的文本上方,但注释则可以根据需要强调的文本内容置于其上方或下方。

A. 如果起落架门是做为一个内部结构,它们只能显示在第 32 章。

B. 如果起落架门是做为一个整体结构,它们只能显示在第 32 章。

C. 如果作为一个内部结构,起落架门只能显示在第 32 章。

A. A motor can power all the systems.

B. One generator can power for all the systems.

C. One generator can supply power for all the systems.

A. Each door has flexible seals at its structure interface which protect the metal interfaces from damage by the airflow.

B. Each door has flexible seals at its structure interface which protect the metal interfaces from no damage by the airflow.

C. Each door has formalist seals at its structure interface which protect the metal interfaces from damage by the airflow.

A. During the retraction test,keep a close watch on the monitor.

B. Continuously observe the indications after the retraction test.

C. Monitor the indications during the retraction test.

A. Decrease the pressure in the hydraulic system.

B. Bleed the speedbrake hydraulic system.

C. Disconnect the speedbrake hydraulic system.

A. Turn the body of the closure assist assembly with a wrench to pull the two thrust reverser doors together until you can engage the latches at the bottom of the doors.

B. Turn the main body of the closing aid with a crowfoot and pull the two throttle reverser doors together until you can connect the bolts at the bottom of the door.

C. Use a wrench to turn the main body of the closing auxiliary assembly and pull the two reversedoors together until you can attach the locks at the bottom of the door.

D. C.Use a wrench to turn the main body of the closing auxiliary assembly and pull the two reversedoors together until you can attach the locks at the bottom of the door.

A. The rudder is a replaceable airfoil which is mounted to the vertical fin and is used for yaw control.

B. The rudder is a removable wing which is fixed to the vertical stabilizer and is used for pitch control.

C. The rudder is a removable airfoil which is attached to the vertical stabilizer and is used for yaw control.

A. 当飞机在地面上时支撑飞机机头的那部分系统,包括减震支柱、阻力支柱、门、连接装置、固定螺栓等。

B. 当飞机在地面上时支撑飞机机头的那部分系统。包括刹车、浮子、门、轮胎、固定螺栓等。

C. 当飞机在地面上时支撑飞机机头的那部分系统。包括驱动机构、转向架饰件、门、跳板、上下门闩等。

D. C.当飞机在地面上时支撑飞机机头的那部分系统。包括驱动机构、转向架饰件、门、跳板、

E. C.当飞机在地面上时支撑飞机机头的那部分系统。包括驱动机构、转向架饰件、门、跳板、上下门闩等。

A. 描述飞机仪表板时,如果安装了信号通告面板,应说明其操作方式。

B. 描述飞机仪表板时,如安装,应描述警告面板的运行方式。

C. 描述飞机仪表板时,如果安装了通告台板,应说明其操作方式。