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【判断题】
保证砂拱稳定性必须考虑两个关键问题：一是降低并稳定油层流体速度，二是保持或降低井筒周围油层的径向应力。A.
正确
B.
错误
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举一反三
【简答题】The driver must take responsibility for the accident _______________ because he was not paying full attention.
【单选题】The driver must take complete___ for this accident .
A.
control
B.
objection
C.
business
D.
responsibility
【简答题】Task 4 Fill in the blanks in the following sentences with the words given in the box. Change the form where necessary. encounter come across alter in the course of liberate be reluctant to ...
【单选题】张先生, 59岁,因咳嗽、咳痰2年,痰中带血,食欲减退,体重下降收治入院。对该患者的诊断最有意义的检查是 ()
A.
纤维支气管镜检查
B.
痰结核菌检查
C.
血培养
D.
肺活检
E.
痰脱落细胞检查
【单选题】The driver must take responsibility for the accident_______ because he was not paying his attention.
A.
so
B.
why
C.
liberation
D.
to a certain extent
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