2253. To prevent unwanted friction, polish the surface

A. Check such system to determine the cause of interference.

B. Examine part of the system to find the cause of the interference.

C. Examine all of the system to find the cause of the interference.

A. FOLLOWS

B. FOLLOWING

C. FOLLOWED

A. Stop the engine run-up practice.

B. Stop the engine start procedure.

C. Stop the engine ignition project.

A. Return lines need not be shown in entirety unless necessary to the understanding of the system.

B. An understanding of the system is necessary for the return line to be displayed in its entirety.

C. The return line does not need to be shown in its entirety unless an understanding of the entire system is required.

A. drink contaminated water.... must happen.

B. drink water free xxx, illness can occur.

C. Drink water with Xxx, you will be sick.

A. The fault isolation work describes how to locate the fault. After you solve the fault， you may find “ The fault is corrected” shown on the screen.

B. The fault isolation task tells the way to find the reason of the fault. When you find the words “You corrected the fault”， it means that the problem is solved.

C. You could find the reason of the fault in the fault isolation steps. If the step indicates “ The fault is being corrected”， it means that you have finished the work.

A. 确保秒表指示在2分钟或4分钟。

B. 确保秒表指示在2 至4分钟之间。

C. 确保指针指示在2 至4分钟之间。

A. 发动机包含螺旋桨轴和减速齿轮,还包括前部安装附件的驱动装置等。

B. 发动机中包含螺旋桨轴和减速齿轮的部分。包括前部安装附件的驱动装置等。

C. 发动机的螺旋桨轴和减速齿轮包括前部安装附件的驱动装置等。

A. 距离皮托管中心线半径3英寸的修复表面轮廓外形,误差不应大于0.007英寸。

B. 距离静压盘中心线3英寸半径上的修复表面等高线,误差不应大于0.007英寸。

C. 静压孔中心线3英寸半径内的修复表面轮廓,误差不应大于0.007英寸。

A. Solid the sealant at a uniform temperature.

B. CURE THE SEALANT AT A CONSTANT TEMPERATURE.

C. SOLID THE SEALANT AT A CONSTANT TEMPERATURE.