雨期施工期间，对水泥和掺合料应采取防水和（）措施。 A.防潮

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问题单项选择题

雨期施工期间，对水泥和掺合料应采取防水和（）措施。

A.防潮

B.防尘

C.排水

D.防油

答案

参考答案：A

选择题

I've tried very hard to improve my English.But by no means________with my progress.

A. the teacher is not satisfied

B. is the teacher not satisfied

C. the teacher is satisfied

D. is the teacher satisfied

问答题简答题

积极探索培养创造性人才的途径与方法有哪些？