矿山安全技术下列选项中，预防瓦斯爆炸的技术措施不正确的是( )

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问题单项选择题

矿山安全技术

下列选项中，预防瓦斯爆炸的技术措施不正确的是( )。

A．防止瓦斯积聚和超限

B．严格执行瓦斯检查制度

C．防止一定浓度的甲烷积聚

D．防止瓦斯爆炸灾害扩大的措施

答案

参考答案：C

单项选择题

46 （单项选择题）

A.Thompson was shocked and devastated.

B.Another trial was held.

C.I cannot begin to imagine what would have happened had my mistaken identification occurred in a capital case.

D.During the attack, she made an effort to memorize every detail of his face , looking for scars , tattoos (纹身) or other identifying marks.Jennifer

E.Many criminals are sent to prison on the basis of accurate testimony by eyewitnesses.

F.Jennifer Thompson decided to meet Cotton and apologize to him personally.

判断题

会计工作的社会监督，主要是指由注册会计师及其所在的会计师事务所依法对受托单位的经济活动进行审计、鉴证的一种监督制度。( )