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【单选题】
可用于表示质量浓度的符号是A.
C B
B.
ρ B
C.
ω B
D.
φ B
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反馈参考答案：
举一反三
【简答题】集装箱吊具有哪些主要部件?
【单选题】My seat is next to _____ of the famous writer so I could ask for some advice from him about writing.
A.
that
B.
this
C.
it
D.
one
【简答题】网上购物方便快捷,已成为越来越多的中国人日常生活的一部分。
【简答题】My advice to him is to think carefully before entering into a career in medicine, as this is a field which requires a lot of _____________ and long working hours.
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