A.216~225h
B.226~235h
C.236~245h
D.246~255h
[单选题]A.40kPaB.20kPaC.79.2kPaD.80kPa
[多选题]A.钢筋保护层厚度B.混凝土电阻率C.混凝土碳化状况D.混凝土强度E.氯离子含量
[单选题]A.22.8mB.24.6mC.25.4mD.26.8m
[单选题]A.系统实际阻力过大B.泵的扬程选择过大C.泵的流量选择过大D.未采用高阻力阀门
[单选题]A.增大管道管径减少系统阻力B.冷却水泵改为变频水泵C.将冷却塔的出水管直接连接到泵的吸入口D.将冷却水泵的扬程适当降低
[单选题]A.216~225hB.226~235hC.236~245hD.246~255h
[单选题]A.0.0171~0.0190B.0.0191~0.0210C.0.0211~0.0230D.0.0236~0.0270
[单选题]A.216~225hB.226~235hC.236~245hD.246~255h
[单选题]A.0.0171~0.0190B.0.0191~0.0210C.0.0211~0.0230D.0.0236~0.0270