问题
单项选择题
做好硫化氢监测是安全钻井的前提，现场硫化氢监测仪报警的质量浓度设定为：第一级报警阈值应设定在（），但不启动报警音响，仅向钻井施工人员提示硫化氢目前的质量浓度值；第二级报警阈值应设定在（）。
A.5mg／m3；15mg／m3
B.5mg／m3；25mg／m3
C.10mg／m3；30mg／m3
D.10mg／m3；20mg／m3
答案
参考答案：D
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做好硫化氢监测是安全钻井的前提，现场硫化氢监测仪报警的质量浓度设定为：第一级报警阈值应设定在（），但不启动报警音响，仅向钻井施工人员提示硫化氢目前的质量浓度值；第二级报警阈值应设定在（）。
A.5mg／m3；15mg／m3
B.5mg／m3；25mg／m3
C.10mg／m3；30mg／m3
D.10mg／m3；20mg／m3
参考答案：D
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