A.大于95% B.大于90% C.小于95% D.小于90% E.大于85%
A.4小時(shí) B.6小時(shí) C.12小時(shí) D.24小時(shí) E.48小時(shí)
A.0.1% B.0.5% C.1% D.1.5% E.2%