A.6m/s,8m/s B.5m/s,8m/s C.6m/s,7m/s D.6m/s,8m/s
A.50℃,80℃ B.60℃,80℃ C.60℃,70℃ D.50℃,70℃
A.0.2~1m B.0.3~1m C.0.4~1m D.0.5~1m