()riskscannotbemanagementproactivelyandthereforemaybeassignedamanagementreserve.
A.Knowm B.Natural C.Unknown D.Human正确答案C
()riskscannotbemanagementproactivelyandthereforemaybeassignedamanagementreserve.
A.Knowm B.Natural C.Unknown D.Human正确答案C