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【单选题】
起下钻杆中软关井程序规定：（） a、打开液动放喷阀，关闭环形防喷器 b、抢接止回阀，上提钻具100mm（±50mm） c、发出报警信号，停止起下钻作业 d、关闭与具尺寸相符的半封闸板防喷器，将吊卡缓慢坐在转盘面上 e、关闭液动节流阀，再关闭液动节流阀前的平板阀；打开环形防喷器 f、接方钻杆（不计入关井时间），每2分钟准确记录一次立管压力和套管压力 g、迅速向钻井监督、值班干部报告A.
a、c、b、d、f、g、e
B.
b、a、d、e、c、g、f
C.
c、b、a、d、e、g、f
D.
e、a、c、b、d、f、g
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A.
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B.
did
C.
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D.
was doing
【单选题】— When did you finish _____ your homework? — I finished it at 9:00 last night. [ ]
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B.
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D.
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A.
doesn’t; until
B.
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C.
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D.
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A.
So have I
B.
I have so
C.
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D.
So you do
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