A、 Obey the safety precautions when you do work with high voltages.
B、 When working with high resistances,you should follow the safety precautions.
C、 The safety precautions are optional in an environment with high voltages.
答案：A
A、 Obey the safety precautions when you do work with high voltages.
B、 When working with high resistances,you should follow the safety precautions.
C、 The safety precautions are optional in an environment with high voltages.
答案：A
A. For normal operations,make sure the pressure relief valve is closed.An open pressure relief valve is a symptom of a problem in the fuel vent system.
B. For normal operations,make sure the shutoff relief valve works.If you open pressure relief valve,that indicates a problem in the fuel vent system.
C. For normal operations,make sure you close the pressure relief valve.If you leave it open,a problem will be shown in the fuel vent system.
A. If the two indications do not agree,do the test again.
B. If there is a conflict between the two indications,repeat the test.
C. If the two indicators show any conflict,repeat the test.
A. Fill the outer tank before you fill the inner tank.
B. Fill the inner tank before you fill the outer tank.
C. Fill the inboard tank before you drain the overboard tank.
A. 推荐在手册中添加“非正常程序”部分。
B. 鼓励“异常程序”加入手册中。
C. 鼓励“异常流程”步骤被合并入手册。
A. The operator's maintencance organization must make sure that each aircraft has all inspection records.
B. Make sure that the required repair/alteration/inspection documents of each aircraft must be kept by maintenance organization of the operator.
C. Ensurethattheoperator'smaintenanceorganizationhasretainedtherequired maintenance/alteration/inspection records for each aircraft.
A. Use backthrust to change the direction of the exhaust to achieve contrary thrust.
B. Thrust reverser is used to change the direction of the exhaust gases for reverse thrust.
C. To change the direction of the exhaust nozzle,the thrust reverser is used to obtain the opposite thrust.
A. 如果警告灯是亮的,将无法在门关闭时正确调节微电门。
B. 在门关闭时如果警告灯亮起,说明微电门调节不正确。
C. 在门关闭时如果标志灯在位,微电门将无法正常调节。
A. 使用耗材时要小心。
B. 小心使用易燃品。
C. 使用化学材料要小心。
A. The space equipment releases the air from the compound.
B. The vacuum equipment decreases the air from the compound.
C. The vacuum equipment removes the air from the compound.
A. When the indicator is visible,stop the pump.
B. When the indicator comes on ,stop the pump.
C. Stop the pump unless the indicator comes into view.
