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[单选题]
For anyinformation system to serve its purpose ,the ihformation must be()when it ìs needed.
A.integral
B.availab1e
C.irreplaceable
D.confidential
提问人:网友InfoTech
发布时间:2022-01-06
A.integral
B.availab1e
C.irreplaceable
D.confidential
方框图化简
A.(1-G1(S))G2(S)/(1+G1(S)*G3(S))
B.(1+G1(S))G2(S)/(1+G2(S)*G3(S))
C.(1+G1(S))G3(S)/(1+G2(S)*G3(S))
D.(1-G1(S))G3(S)/(1+G2(S)*G3(S))
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