GIS断路器由热备用转运行操作原则？

A. to inspect if the cylinder has the water leakage
B. to expel out the residual water/gas/oil from the cylinder
C. to check if fuel supply is normal
D. A and B

A. 委托征收
B. 解缴
C. 监督
D. 管理

A. 正确
B. 错误