（）can cause oil flow from water outlet of a separator. ["Oil inlet valve opening too quickly","Oil temperature too high","Diameter of gravity disc too small","Viscosity of oil too low"]
混凝土电抗器、干式电抗器、滤波器和阻波器的验收项目有哪些？
设备安装的紧固要求有哪些？
营销语言的表达技巧不包括（） ["要真诚","要慎重","要简洁","要夸张"]
避雷器的验收项目有哪些？
为什么交流电能通过电容器？
