A.12~24h B.6~12h C.4h D.2h
A.直徑大于30mm,深度大于30mm B.直徑大于10mm,深度大于10mm C.有效直徑大于30mm,深度大于30mm D.有效直徑大于30mm,深度大于10mm
A.240N/s±20N/s B.2400N/s±200N/s C.500N/s±100N/s D.50N/s±5N/s