分布式电源接入电网有哪些安全要求？
各单位建立监管员定期岗位轮换的制度，监管人员一般要求异地（）个月、本地一个月必须轮换。 ["一","二","三","四"]
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"]
分布式电源的优点有哪些？
（）是科医学非常重要的原则，也是全科医学区别于其他二级临床医学专科的重要特征。 ["连续性照顾","人格化的照顾","综合性照顾","协调性照顾"]
分布式电源接入电网有哪些接线方式？
