881.把插头插到插座上。

A. Correct punctuation is important because it shows that the different parts of the text are reconnected and prevents miscomprehension.

B. Correct punctuation is important because it shows how the different parts of the text are independent and prevents accumulation.

C. Correct punctuation is important because it shows how the different parts of the text are related and prevents ambiguity.

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. After 10 flight cycles or 25 flight hours,which comes first,the rod end bearing shall be discarded if its wear is greater than 0.010 inch of diameter.

B. If the rod end bearing wear is greater than 0.010 inch in radial play,reject it within next 10 flight cycles or 25 flight hours whichever comes first.

C. Destroy the rod end bearing during 10 flight cycles or 25 flight hours when its wear is more than 0.010 inch of its radius,whichever comes first.

A. It includes items such as the inflation of shock struts.

B. It includes items such as the deflation of shock struts.

C. It includes items such as the lubrication of shock struts.

A. 用于密封油箱的所有材料对所有燃油和燃油稳定剂都耐用。

B. 用于密封油箱的所有材料对所有燃油和燃油添加剂都耐用。

C. 用于密封油箱的所有材料对所有燃油和燃油添加剂都防水。

A. 将适配器及其支撑设备固定在位。

B. 将适配器靠在支柱上。

C. 将适配器与支柱接合在同一位置。

A. Guarantee a consistent performance of the probe.

B. Maintain an uninterrupted movement of the probe.

C. To ensure continuous movement,the probe must be kept in motion.

A. 调整倾斜仪,直到气泡位于中心。

B. 在倾斜仪上的气泡位于中心后进行调整。

C. 将倾斜仪调整到气泡的中心位置。

A. 那些组件和部件存储、调节并向旅客和机组输送氧气,包括气瓶、释压活门、关断活门、出口、调节器、面罩等。

B. 气瓶,释压活门,关断活门,出口,调节器,面罩等组件和部件储存氧气,并将调节后的氧气提供给乘客和机组。

C. 那些旅客和机组氧气系统的相关组件和部件存储、调节、输送氧气,包括气瓶、释压活门、关断活门、出口、调节器、面罩等。

D. C.那些旅客和机组氧气系统的相关组件和部件存储、调节、输送氧气,包括气瓶、释压活门、关断活门、出口、调节器、面罩等。

A. 特殊尺寸应显示在图形中。

B. 详细尺寸应显示在图纸上。

C. 主要尺寸应显示在图纸上。