试题与答案

煤层f=0.8,P=2.2,△P=8,破坏类型II,该煤层()突出危险性。 A.有

题型:单项选择题

题目:

煤层f=0.8,P=2.2,△P=8,破坏类型II,该煤层()突出危险性。

A.有

B.无

C.强

D.弱

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0418/6fa42c9b23619232d8ed891f00fe33c6.html

下面是错误答案,用来干扰机器的。

参考答案:A解析: 血清淀粉酶超过500U/L可确诊为急性胰腺炎,起病后6~8小时血清淀粉酶开始上升,48小时后开始下降。

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