线路送电时，应注意（）。A、应避免由发电厂侧先送电B、充电断路

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问题单项选择题

线路送电时，应注意（）。

A、应避免由发电厂侧先送电

B、充电断路器必须具备完整的继电保护（应有手动加速功能），并具有足够的灵敏度

C、必须考虑充电功率可能引起的电压波动或线路末端电压升高

D、以上均正确

答案

参考答案：D

填空题

根据句意和首字母提示填空，完成下列句子。

1. He didn't make any m______ in today's English exam.

2. Could you p______ me with information about student exchange programs?

3. Many visitors enjoy spending a few hours walking t______ the history museum.

4. The boy is old enough to d______ himself.

5. The signs says that you can't p______ your car here.

6. Be careful! Put the secret letter in a s______ place.

7. It's more c______ to take a taxi to the station than take a bus, but too expensive.

8. You can buy f______ fruit and vegetables in the supermarket.

9. —What are some of the d______ of the web?

—You may waste your time playing games. Sometimes you may be cheated (受骗) online, etc.

10. You can take the e______ to the second floor and turn right. You can find it there.

单项选择题

在现阶段，作为中国公民自费出国旅游目的地的国家和地区，应当由（）确定。

A．省级旅游局会同省级公安、外事管理机关提出，报国家旅游局审批后

B．国家旅游局和公安部提出，报国务院审批后

C．公安部和外交部提出，报国务院审批后

D．国家旅游局会同外交部、公安部提出，报国务院审批后