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【判断题】
离心泵中的轴承能平衡轴向力。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Which of the following is TRUE about the north polar cap of Mars in summertime?
A.
It is at its largest size.
B.
It is changing its shape all the time.
C.
It is at its smallest size.
D.
It is at its windiest time.
【单选题】男性,75岁,患慢性阻塞性肺病史10多年,3小时前意识不清,体检:呼吸急促,口唇发绀,心率120次/分,律齐,两肺闻及干啰音,血压74/45mmHg,PH7.25,PaCO2 80mmHg,PaO2 55mmHg,此时不适用的是
A.
纠正低血压
B.
抗生素治疗
C.
持续低浓度给氧
D.
呼吸机正压通气
E.
呼吸兴奋剂
【单选题】He had had a long and uncomfortable trip, for he had been confined ______ the wooden box for over ten hours.
A.
beyond
B.
in
C.
on
D.
to
【简答题】_____________(谁会料到) such a rise in the river in summertime?
【简答题】f the boy had _____ the dog alone it wouldn’t havebitten him. A. set B. left C.had D. put
【单选题】Washington ______ get very hot and sticky in summertime. July and August are usually the warmest months.
A.
must
B.
can
C.
should
D.
might
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