问题
单项选择题
我国煤矿井下使用的变压器中性点采用（）方式。
A、以下都不正确
B、与地无关
C、直接接地
D、不直接接地
答案
参考答案：D
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我国煤矿井下使用的变压器中性点采用（）方式。
A、以下都不正确
B、与地无关
C、直接接地
D、不直接接地
参考答案：D
| 完形填空。 | ||||
| Miss Zhao is one of the most popular teachers in the school. Yesterday she came into the __1__with a big smile on her face. She said to her __2__that she was __3__to see they did well in the sports meeting. But __4__was not pleased to see the classroom last Saturday not as __5__as usual. She hoped they would clean the classroom every day .Wei Hua was on __6__yesterday. She said everyone was at __7__except Lin Tao. Then she told Miss Zhao about their __8__to the Great Wall last Sunday. Luckily the weather was__9__. The played games and had a picnic there. After Wei Hua __10_her talk, Miss Zhao began her lesson. | ||||
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