问题 多项选择题

《建筑消防安全检测评价技术规程》规定,拟对某单位交流380V供电所五芯电力电缆绝缘电阻测试时,其正确的操作应为()

A.对该电缆拉闸断电后即可进行测试

B.将该电缆断电,同时将电缆始端和终端的配电设备器件断开(即腾空)后方可进行测试

C.测试时应对该电缆相线与相线、相线与PE线、相线与N线、N线与PE线间绝缘电阻都应进行测试

答案

参考答案:B, C

选择题
阅读理解

阅读理解。

     George and Carol were medical students at the same college and like many other college students,

they enjoyed playing jokes on people. Both of them smoked, but they knew that their professor was

strongly against it, because smoking was dangerous to one's health. One day they decided to play a

joke on their professor.

      At one of their medical lectures (讲座) there was always a skeleton (骨架模型) in the room so

that the professor could show the students the different bones in the human body.

      That afternoon. Carol and George put a cigarette (香烟) in the mouth of the skeleton that was

to be used for their next lecture.

     When the professor came in. he began talking and then noticed the cigarette. He went up to the

skeleton, took the cigarette out of its mouth and said. "You really should give them up, old boy. Look

what they're doing to you!"

1.What do the professor's words mean _______.

A. It's only a joke to put a cigarette into a skeleton's mouth.

B. He would persuade the skeleton to give up smoking.

C. Smoking is really dangerous. It may even cause death.

D. Students should not learn from the skeleton to smoke.

2. To whom did the professor really say these words?

A. To George and Carol only.

B. To the skeleton which he called "old boy".

C. Only to himself.

D. To all the students who attended his lecture.

3.The underlined word "they" in the passage means _______.

A. George and Carol

B. the students

C. the bones

D. cigarettes

4.What do you think of the professor?

A. Serious but humorous.

B. Honest and foolish.

C. Kind and polite.

D. Hard to get along with.