筒压法所测试的砂浆强度范围应为（）._爱下问搜题

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问题填空题

筒压法所测试的砂浆强度范围应为（）.

答案

参考答案：2.5MPa～20MPa

改错题

单句改错。（每句均有一处错误）

1. They are very happy at Christmas Eve.
2. He put away his books, doesn't he?
3. What's the weather like in Beijing last year?
4. Let me to ask her to speak Chinese.
5. You'd better not to be late for c

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单项选择题

银行因某细分市场规模和容量太小，无法实现利润而放弃该市场的行为是遵循了( )。

A．可衡量性原则
B．可进入性原则
C．差异性原则
D．经济性原则