列车头灯控制线路为直流()V,电源电压为()V。 ["DC110V;DC24V","DC24V;DC110V","DC110V;DC110V","DC24V;DC24V"]
查理大帝为了维护其神圣罗马帝国的统治,建立了()。 ["分封制","集权制","郡县制","层级制"]
周初,周公东征的对象不包括:() ["武庚","管叔","孤竹","蔡叔"]
商朝在历史上又成为:() ["夏朝","周朝","殷商","蛮夷"]
运筹博弈()()
行政决策拟定阶段、任务、针对决策问题依据()设计实现目标。