（）不是项目范围变更控制管理的依据。 ["A.工作分解结构","B.项目进展报告","C.变更请求","D.资源说明书"]
Oily water separator mis-alarms, the most possible reason is （） ["separating oil too fast","the sensor flushed badly","the discharge solenoid value out of order","too low heating temperature"]
隔离开关常见的故障有哪些？如何处理？
Because the flow rate of supply water pump is too large, oily water separator does not work wellWhich of the following is not the reason?（） ["the monitoring equipment is out of order","separating effect becomes bad","inner wall is contaminated","separating effect becomes bad and inner wall is contaminated"]
计算机存储器的单位为字节，那么1MB等于（） ["1024KB","1000KB","1200KB","800KB"]
隔离开关和接地开关不能机械操作应如何处理？
