A.
B.
C.
D.
[单选题]A.B.C.D.
[单选题]A.-1V,5,143ΩB.1V,5ΩC.-1V,5ΩD.1V,5.143Ω
[单选题]A.安装高温报警器B.安装溢流装置C.安装高温紧急关闭系统D.安装冷却水流量计和低流量报警器
[单选题]A.2B.4C.8D.16