A.12%~14%B.14%~16%C.16%~18%D.18%~20%
A.1.5~1.8m3∕dB.1.8~2.5m3∕dC.2.5~3.8m3∕dD.3.8~4.0m3∕d
A.12%~18%B.18%~24%C.24%~30%D.30%~35%