
A.DN125
B.DN150
C.DN200
D.DN250
[单选题]A.150mmB.160mmC.175mmD.195mm
[单选题]A.3倍B.2倍C.9倍D.不变
[单选题]A.1.178B.1.781C.1.871D.2.2
[单选题]A.0.0244kg水/kg绝干气B.0.0275kg水/kg绝干气C.0.0206kg水/kg绝干气D.0.0358kg水/kg绝干气
[单选题]A.c>b>aB.b>a>cC.a>c>bD.a>b>c
[单选题]A.4.05mB.3.60mC.1.80mD.2.40m
[单选题]A.6.680mB.7.026mC.676.4mD.4.196m
[单选题]A.逐渐减小B.逐渐增大C.保持不变D.可能增大,也可能减小
[单选题]A.6.24kJB.8.51kJC.3.00kJD.0.