簇优化时，要选择开通基站数量大于（）的簇进行优化A.70% B.80% C.90%_爱下问搜题

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问题单项选择题

簇优化时，要选择开通基站数量大于（）的簇进行优化

A.70%

B.80%

C.90%

答案

参考答案：B

选择题

— You must be excited about going to USA for further study

— _______, but I'm afraid I can't do well because my English is not good enough.[ ]

A. Never mind.

B. Well, I ought to.

C. I don't know yet.

D. Forget it.

问答题简答题

采煤工作面冒顶预兆有哪些？