A.操作簡(jiǎn)單方便 B.對(duì)正在運(yùn)行的業(yè)務(wù)無(wú)影響 C.無(wú)數(shù)據(jù)損壞的風(fēng)險(xiǎn) D.降低人工成本
A.12 B.13 C.14 D.15
A.4 B.3 C.2 D.1