问题
单项选择题
节流压井过程应严格控制液气分离器进液压力，如发现液气分离器抖动明显或超过其额定天然气处理量的（）%时，应立即停止使用。
A.90；
B.80；
C.70；
D.50。
答案
参考答案：D
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节流压井过程应严格控制液气分离器进液压力，如发现液气分离器抖动明显或超过其额定天然气处理量的（）%时，应立即停止使用。
A.90；
B.80；
C.70；
D.50。
参考答案：D
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| Dear David , Thank you for your letter. You want to know about my family and what they like to do on weekends. Let me tell you now. There are four people in my family. They're my father Mr King, my mother Mrs King, my brother Tony and I. On Saturday, my father often goes to see my grandmother. My mother goes to work. She is a shop assistant. My brother often plays tennis with his friends. I go to the library. On Sunday, my father often goes to the chess club,and my mother cleans the house at home. My brother usually does his homework, and I go to the movies with my friends. Please write to me and tell me about your family. Yours, Rose | |||||||||||||||
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