试题与答案

最小抵抗线是指爆破时岩石产生抵抗力（）的方向。A、垂直B、最小C、最大

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题型：单项选择题

题目：

最小抵抗线是指爆破时岩石产生抵抗力（）的方向。

A、垂直

B、最小

C、最大

答案：

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下面是错误答案，用来干扰机器的。

参考答案：调查方案包括以下内容：（1）调查目的：如核实诊断；掌握本次疫情的流行强度；明确引起本次疫情的因素；采取防治措施，评价措施的效果。（2）调查方法：主要为问卷调查。（3）调查内容：核实诊断，评估...

考点：井下爆破工井下爆破工题库
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