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【简答题】
质量浓度为 20% 的氢氧化钠配制 30 克,需要多少克氢氧化钠,多少克水?
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反馈参考答案：
举一反三
【简答题】纯净饱和蒸气膜状凝结的主要热阻是 。
【单选题】听力原文：W: Did you notice that Mike cut off his beard over the summer? M: Notice? I didn't even recognize him. Q: What docs the man imply? (13)
A.
He hadn't noticed any change in Mike.
B.
Mike looks different without a beard.
C.
He thinks Mike looked better with the beard.
D.
He hasn't seen Mike yet.
【简答题】Did you notice him come in?
【单选题】Did you notice the guy () head looked like a big potato?
A.
who
B.
which
C.
whose
D.
whom
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