施工水刷石时，用喷雾器从上往下喷水，冲去水泥浆使石粒露出（）

搜题请搜索小程序“爱下问搜题”

问题单项选择题

施工水刷石时，用喷雾器从上往下喷水，冲去水泥浆使石粒露出（）粒径，达到显露清晰的效果。

A、1／4—3／4

B、I／3—1／2

C、I／2—3／4

D、1／5—1／2

答案

参考答案：B

填空题

根据句意及首字母的提示，补全单词。

1. The old man is not as a_____ as he was.

2. He headed t ___the station, he would leave for Shanghai.

3. I looked down the hall b_____, and there was nobody in it.

4. Its price has r_____ greatly, so I can't afford it.

5. He's my friend. we shall not let such a small matter d __us.

单项选择题

下列不属于雕刻石的是( )。

A．寿山石

B．昌化石

C．青田石

D．绿松石