A.q<0.1L/s•m() B.q>2L/s•m C.0.1L/s•m≤q<2L/s•m D.不確定
A.250-500 B.500-1000 C.1000-2000 D.250-750
A.0.3-0.8m B.0.1-0.5m C.0.2-0.7m D.0.3-0.5m