试题与答案

Facing the stress of employment, some co

题型:选择题

题目:

Facing the stress of employment, some college graduates make a popular choice ____ they will join the army.

A.which

B.that

C.what

D.where

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:胶体分散质粒子直径在1~100nm之间,溶液分散质粒子直径小于1nm,浊液分散质粒子直径大于100nm。点评:溶液、胶体、浊液三种分散系本质区别是分散质微粒直径不同;溶液和胶体都能透过滤纸、浊液...

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