A.每臺每小時的斷頭根數(shù) B.千錠每小時斷頭根數(shù) C.每臺每班的斷頭根數(shù) D.千錠每班的斷頭根數(shù)
A.3~4 B.4~7 C.5~8 D.6~10
A.70% B.80% C.90% D.60%