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【单选题】
食品检测和微生物学实验室中最常用的一种湿热灭菌法是（），它适用于各种耐高温而又不怕蒸汽的物品灭菌。A.
流通蒸汽消毒法
B.
间歇灭菌法
C.
高压蒸汽灭菌法
D.
煮沸消毒法
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举一反三
【单选题】Jack must have been to hospital last night,_________?
A.
mustn't he
B.
haven't he
C.
didn't he
D.
hasn't he
【简答题】西方历史上最早专门论述教育问题的著作是____。
【单选题】听力原文：W. Jack must have been joking when be said that he was going to quit his job. M: Don't be too sure. He told me that he was trying to sell his house. What conclusion does the man want us to make?
A.
He believes that Jack will not be able to sell his house.
B.
He believes that Jack was joking.
C.
He agrees with the woman.
D.
He believes that Jack will quit his job.
【单选题】听力原文：M：Jack must have been joking with me．He told me that he was trying to quit his present job for another one． W：Don't be too sure．He just won the big prize from the company． Q：What can be inferred ...
A.
Jack is sure to quit his job.
B.
Jack is a changeable person.
C.
Jack will not change his job.
D.
Jack likes telling jokes.
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