Foranyinformationsystemtoserveitspurpose,theihformationmustbe()whenitìsneeded.
A.integral B.availab1e C.irreplaceable D.confidential正确答案B
Foranyinformationsystemtoserveitspurpose,theihformationmustbe()whenitìsneeded.
A.integral B.availab1e C.irreplaceable D.confidential正确答案B