乐乐家有款电热水器,说明书上有工作原理电路图(如图甲),有“加热”和“保温”两档.正常工作时电路的总功率分别为1100W和11W.试求:
下表反映的是一种汽车行驶的路程和耗油量的情况.
一辆汽车2小时可以行驶100千米,平均每小时可以行驶____千米?
I visited many places including the History Museum last Saturday. When I _______ at the hotel, it was very late.