6kV公用段主要带哪些负荷？
参考答案：
化水变、燃油变、输煤变、净化站、低压公用变、一二级灰浆泵、冲灰水泵、碎煤机、＃2、＃5皮带、斗轮机。
The skating marathon _____ for five hours now, and several skaters are still skating. [ ]
A. has begun
B. has gone
C. has been going
D. has been
( )在工程开工前，应按规定向水利工程质量监督机构办理工程质量监督手续。
A．施工单位
B．监理单位
C．项目法人(建设单位)
D．项目法人
