A.VWTHF、WTHE、干THF B.WTHF、VWTHF、干THF C.干THF、WTHF、VWTHF D.干THF、VWTHF、WTHF
A.0.7 B.1.79 C.1.82 D.2.0
A.0.30-0.35 B.0.40-0.45 C.0.45-0.50 D.0.50-0.55