根据《矿山事故灾难应急预案》规定，发生（）级事故及险情，启动

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问题单项选择题

根据《矿山事故灾难应急预案》规定，发生（）级事故及险情，启动国家级矿山事故灾难应急预案。

A.Ⅱ

B.Ⅰ

C.Ⅲ

答案

参考答案：B

单项选择题

Speaker A: Next please! Hello, may I help you, sir
Speaker B: ().

A. Hi, do you have a larger size of this shirt

B. I’d like to make an appointment with Dr. Smith.

C. Yes. I want to send a registered airmail letter to Australia.

D. May I have a look at the menu first

单项选择题

儿童肾病综合征高胆固醇血症的诊断标准是大于（）

A.4.5mmol/L

B.5.2mmol/L

C.5.7mmol/L

D.6.5mmol/L

E.7mmol/L