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问题 单项选择题

下列对挤压式混凝土泵描述正确的是（）。

A、结构简单，维修方便

B、泵送混凝土的压力较大

C、输送距离和高度可以较大

D、对骨料最大粒径要求较松

答案

参考答案：A

填空题

单词拼写。

 1. Without a j________, a football game can't go on.

2. The famous scientist has done a lot for our country and people have given him a lot of h_______.

3. He knows only a little English and can't e________ himself in English.

4. On arriving there, we offered our c________ to him on his success.

5. Please accept our ________ (诚挚的) thanks.

6. Before you start to write your article, you can make an ________ (提纲).

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单项选择题

下列能表达急惊风的证候特征的是( )

A．惊痰
B．痰热
C．风痰
D．惊热
E．惊风痰热
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