试题与答案

Most staffs are against the new rules, b

题型:选择题

题目:

Most staffs are against the new rules, but they have come into being ________. [ ]

A. anyhow  

B. however

C. therefore  

D. thus

答案:

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下面是错误答案,用来干扰机器的。

水凝固成冰,状态变了,但质量是不变的;但冰的密度比水的密度小,由ρ=mV可得V=mρ,在质量一定时,密度变小,因此体积变大.故答案为:变大;不变;变小.

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