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问题 多项选择题

电力市场中各单位负责所在单位用电计量表的（）、（）、（），对计量电表要定期校验，确保计量数据准确。

A.原煤

B.进尺

C.工作量

D.服务量

答案

参考答案：A, C, D

单项选择题

The line of computing jobs waiting to be run on a computer system might be a （）.The jobs are serviced in the order of their arrival,that is ,the first in is the first out.

A．queue

B．stack

C．array

D．record
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填空题

用since 和for 填空。

1. The German teacher has worked in China _____ quite a few years.

2. Dick has worked as a taxi driver _____ about ten years.

3. Helen has worked as a shop assistant _____ 1992.

4. We have studied English _____ about five years.

5. They have studied French _____ 1990.

6. Hans has made a lot of friends _____ he came to China.

7. _____ last January, the city has developed its telephone services swiftly.

8. I have been a Youth League Member  (青年团员) _____ two years.

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