问题
单项选择题
要求利用所提供的室内接地件将馈线接头与母地线相连，连接点牢固，并作绝缘处理，地线应穿出地线U型卡（）mm左右，以保证接触良好。
A、1
B、2
C、3
D、4
答案
参考答案：B
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要求利用所提供的室内接地件将馈线接头与母地线相连，连接点牢固，并作绝缘处理，地线应穿出地线U型卡（）mm左右，以保证接触良好。
A、1
B、2
C、3
D、4
参考答案：B
| 用所给词的正确形式填空。 | |
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| 1. Tom often _______ letters to his pen pal. 2. There are some _______ in the tree. 3. I have some ________ to do on weekends. 4. Look! They ________basketball over there. 5. _______ for your help. 6. Sunday is the _______ day of a week. 7. It's time for us _______ up. 8. Let's _______ in the river. 9. Han Mei _______ documentaries because they are boring. 10. Lily's brother plays computer games very _______. |