题目内容

????It has been almost five years we saw each other last time.????

A. after
B. before
C. since
D. when

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MD5和SHA算法属于单向散列函数。()

常用的四种保证装配精度的方法是完全互换装配法、选择装配法、()装配法和()装配法。

Jack is news reporter and he likes job very much.

A. a;the
B. the;the
C. the;a
D. a;a

机器造型可以采用三箱造型。()

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