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【单选题】
为了减小气体阻力以及气体与毛细管壁的内摩擦力,有利于表面活性剂在气液界面达到吸附平衡,气泡从毛细管口逸出的速度控制在每分钟 。A.
5-15 个
B.
30-40 个
C.
40-50 个
D.
50-60 个
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反馈参考答案：
举一反三
【单选题】It was such a_____ job that I really felt_____.
A.
tiring; tiring
B.
tired; tired
C.
tiring; tired,
D.
tired; tiring
【单选题】在网页设计中也可以使用( )标记来创建表格的表头。
A.
〈td〉〈/td〉
B.
〈tr〉〈/tr〉
C.
〈thead〉〈/thead〉
D.
〈table〉〈table〉
【单选题】男童,岁,因发现眼睑、阴囊水肿明显就诊,尿液检查蛋白定性+++,红细胞++,低蛋白血症,诊断为“肾病综合征”,大量蛋白尿期间,每天每公斤蛋白质摄入量多少为宜( )
A.
1g
B.
2g
C.
3g
D.
4g
E.
5g
【单选题】He feels _____ today than yesterday. A. tired B. more tired C. more tireder D. much tired
A.
tired
B.
more tired
C.
more tireder
D.
much tired
【单选题】听力原文：What's the matter with you，John? (10)
A.
I'm very tired.
B.
It's fine with me.
C.
It doesn't matter.
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