A.1% B.2% C.3% D.4% E.5%
A.≤1%~3%/8h B.≤3%~5%/8h C.≤5%~8%/8h D.≤8%~10%/8h E.≤10%~15%/8h
A.1% B.3% C.5% D.10% E.20%