問答題
單項選擇題
A.12~24 B.24~48 C.48~96
A.2~8 B.8~24 C.24~48
A.4 B.6 C.8
A.5 B.10 C.15 D.20
A.15 B.30 C.45 D.60
A.1 B.10 C.100 D.1000
A.0~4 B.4~8 C.8~12 D.12~16
A.不低于空氣飽和值的40% B.不低于空氣飽和值的60% C.不低于空氣飽和值的80%