2123.Make sure that the wire is in the position to cause the parts to lock.

A. 把上凸轮放到与拆下时所做标记一致的位置。

B. 上部卡箍安装的位置应该与拆卸标记保持一致。

C. 经同意后,对应拆卸时所作的标记将上部曲柄安装在位。

A. Move the hose to make sure that the inner connection is stable.

B. Move the tube to ensure that the inner connection is loosen.

C. Move the tube to make sure that the inner connection is tight.

A. Rise the cylinder up its install position.

B. Lift the cylinder above its installed position.

C. Lift the bushings above its installing position.

A. In an emergency,the one-shot battery supplies DC power.

B. The one-act battery supplies AC power during emergencies.

C. The one-side battery provides DC power during emergency situations.

A. The swivel nuts on both valves engage threads on an internal stem that loosens or draws tight the valve stem to a metal seat.

B. The rotating nuts on both valves are meshed with the threads on the inner valve stud,so that the valve stud is loosened or tightened to a metal valve base.

C. The swing nuts on both valves engage with the threads on the internal spool,allowing the spool to loosen or tighten to the metal seat.

A. 对泵的控制电门进行保护可以防止误操作。

B. 泵的控制电门可以对误操作进行保护。

C. 泵的控制电门上的保护装置可以防止意外操作。

A. 计算机计算偏离这些数值的能量消耗

B. 计算机根据这些值计算能源消耗

C. 计算机计算根据燃油价值来计算能量消耗目标。

A. 该控制组件安装在机身尾部。

B. 该控制组件安装在驾驶舱后部。

C. 该控制组件位置在驾驶舱底部。

A. It is understood that compliance with the above can in some instances cause duplication of test procedures,which is acceptable.

B. It will lead to repeat the test process when you obey the regulations in some cases,it is barely to be accepted.

C. It is understood that follow the above regulations may cause repeating in the test procedures ,although it is allowable.

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。