669. 抓住螺丝刀松开卡子

A. The function of this special tool is to remove the shims.

B. The purpose of this special tool is to extract the bushing.

C. The function of this special tool is to extend the washer.

A. Disconnect all testing systems as necessary were.

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

C. Turn off all the unnecessary systems.

A. When you do maintenance on the waste water system, make sure that your gloves are put on.

B. Face away from waste water system when you do maintenance on it with gloves.

C. Face away from your gloves when you do maintenance on the waste water system.

A. Oil the steel surfaces.

B. Sprinkle the oil to the steel surface.

C. Apply oil to the steel surfaces.

A. Correct the defect before you stop the pump for a short time.

B. Record the defect before you stop the pump later.

C. Restore the defect before you stop the pump for a long time.

A. 如果固态样品中有金属屑,更换液压泵。

B. 如果固态样品中有金属屑,更换液压活门。

C. 如果液态样品中有金属屑,更换液压泵。

A. 防腐可能有很多原因

B. 腐蚀可能有很多原因

C. 腐蚀可能有很多防腐措施

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. 如果数值(或者量)大于允许值(允许量),记录该数值(或者量)

B. 如果数值(或者量)与允许值(允许量)一致,记录该数值(或者量)

C. 如果数值(或者量)与允许值(允许量)有差别,记录该数值(或者量)

A. 检查后再次拉长连杆。

B. 测试后再次移动连杆。

C. 检查后再次调节连杆。