问答题
目前信息加密技术分为两大类:即对称加密技术和( )加密技术。
目前信息加密技术分为两大类:即对称加密技术和( )加密技术。
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单项选择题
After such a time preparation, none of the engineers could come up with a viable plan.
After such a time preparation, none of the engineers could come up with a viable plan.
A.possible
B.feasible
C.reliable
D.visible