问题
单项选择题
瓦斯抽采站参数监测仪可以连续监测瓦斯抽采管路中的甲烷浓度、流量、负压、泵房内泄漏瓦斯浓度、泵轴温度等参数，由微机完成测量显示、打印等工作。当（）参数超限时，可发出声光报警信号，并按给定程序停止和启动泵。
A、所有
B.两个以上
C.任一
答案
参考答案：C
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瓦斯抽采站参数监测仪可以连续监测瓦斯抽采管路中的甲烷浓度、流量、负压、泵房内泄漏瓦斯浓度、泵轴温度等参数，由微机完成测量显示、打印等工作。当（）参数超限时，可发出声光报警信号，并按给定程序停止和启动泵。
A、所有
B.两个以上
C.任一
参考答案：C
| 瞧这一家子，他们都喜欢吃什么?请根据他们的自述选出后面问题的正确答案。 | ||||||
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| 1. Does Maria like broccoli? A.Yes, she does. B. No, she doesn't. C.Yes, I do. D. I don't know. 2. What does Bill have for dinner? A. Salad and chicken. B. Ice cream. C. Tomatoes and chicken. D. Hamburgers and oranges. 3. _________ eats two eggs and a banana for breakfast. A. Maria B. Bill C. Bob D. No one 4._________ likes ice cream, but _________ doesn't like it. A. Bob, Maria B. Bill, Bob C. Maria, Bill D. Bob, Bill 5. Does Bill have eggs or bananas for breakfast? A.Yes, he does. B. No, he doesn't. C. He doesn't eat eggs or bananas. D. We don't know. |
