居民峰谷表的指示灯如何识别？（）A、居民峰谷表内的红灯闪烁表

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问题单项选择题

居民峰谷表的指示灯如何识别？（）

A、居民峰谷表内的红灯闪烁表示当前用电记录在峰电量，绿灯闪烁表示当前用电记录在谷电量

B、居民峰谷表内的红灯闪烁表示当前用电记录在谷电量，绿灯闪烁表示当前用电记录在峰电量

C、不清楚

答案

参考答案：A

猜谜题，问答题

猜一猜，将正确的词语写在横线上。

1. You take it on a rainy day. If you forget it, you will get wet, It is an ________.

2. This is a season. It's warm and rainy. The flowers bloom. It is ________.

3. It's a man. It is made of snow. It's a ________.

4. It's a kind of vegetables. It's round. When you cut it, it can hurt your eyes. It's an ________.

5. It can blow the leaves off the tree. It's ________.

选择题

、用0，1，2，3，4，5这六个数字可以组成没有重复的四位数偶数的个数是( )

A．300

B．204

C．180

D．156