干煤粉气化合成气组分中CO63%，H224%，CO24%，N28%，其它1%，则其有

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问题单项选择题

干煤粉气化合成气组分中CO63%，H₂24%，CO24%，N28%，其它1%，则其有效组分含量（）。

A.91

B.86

C.95

D.87

答案

参考答案：D

句型转换

句型转换。

1. My little brother is playing football over there. (用every afternoon改写句子)

My little brother _______ _______ over there every afternoon.

2. Tom often does his homework at school. (改为否定句)

Tom _______ often _______ his homework at school.

3. What's the matter with you? (改为同义句)

①What's _______ _______ you?

②What's _______ _______?

4. David has a bad headache at the moment. (改为否定句)

David _______ _______ a bad headache at the moment.

5. The Blacks went to the Great Wall last year. (用next month改写句子)

The Blacks _______ _______ to the Great Wall next month.

单项选择题

电瓶车使用直流电，一般认为（）

A、不会发生触电事故

B、会发生触电事故