题目内容

什么是蛋白泡沫灭火剂?其适用范围有哪些?

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利用锚杆把不稳定的岩块固定在完整的岩体上,这是锚杆的()。

A. 悬吊作用
B. 组合岩梁
C. 组合岩拱
D. 系统作用

用碘量法测定硫一般是用标样进行计算,但也可以根据氧化还原的原理进行理论计算。

A. 正确
B. 错误

依据CRH1A(时速250公里)型动车组二级(专项)修检修计划,外门检查属于()类专项修。

A
B
C
D

Which of the following statements represents the correct action to take when three crew members discover a fire?()

A. One man report the fire, and the other two men fight the fire
B. One man report the fire, one man fight the fire, and one man evacuate and secure the area
C. One man report the fire, one man fight the fire, and one man act as a safety observer
D. All three men fight the fire and report it immediately after it is extinguished

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