Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?（） ["The viscosity off the fuel","The quantity of water to be removed from the fuel","The specific gravity of the fuel","The quantity of dirt to be removed from the fuel"]
Windows XP为用户提供了良好的（）。 ["命令行式单任务操作界面","键命令式多任务操作界面","图形化单任务操作界面","图形化多任务操作界面"]
分布式电源接入电网有哪些接线方式？
If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the（） ["oil has a tendency to emulsify in the bowl","purifier will act as a clarifier at the discharge ring","oil will be lost through the water discharge ports","oil solids will be deposited only at the intermediate top disk"]
We’ve changed our（）not to start loading this evening． ["heart","hearts","mind","mind"]
分布式电源的优点有哪些？
