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问题 多项选择题

通常变电所的接地系统应与下列哪些物体相连接？（）

A.变压器外壳

B.装置外可导电部分

C.高压系统的接地导体

D.中性导体通过独立接地极接地的低压电缆的金属护层

答案

参考答案：A, B, C

单项选择题 共用题干题

患者男，16岁，初二学生。近半年来经常偷拿父母的钱，说要交老师的补课费；借口家里有事经常擅自离校，与朋友一起逛街、抽烟、喝酒，学习成绩越来越差。

该青少年的诊断是（）

A.品行障碍

B.物质滥用

C.注意缺陷多动障碍

D.对立违抗障碍

E.儿童情绪障碍
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填空题

用所给动词的适当形式填空。

1. The sheep ________ all ________ (lie) under the tree when I saw them.

2. The trees ________ (cut)down by the farmers Now.

3. They ________ (learn) more than two thousand words by the end of last term.

4. Hurry up, or you ________ (be) late for school.

5. ________ the boy ________ (see) this kind of bird before ?

6. Why was he made ________ (cry)?

7. Who told you ________(not finish) the homework ?

8. What ________ (should do) on time ?

9. ________ (eat) too much is bad for your health.

10. Neither of you ________ (climb) the Great Wall since then.

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