电容器是一种储存()的元件。
A、电能
B、磁能
C、化学能
D、动能
参考答案:A
很多家用电器都有待机功能,比如,电视可以用遥控器关机而不必断开电源。这一功能虽给人们带来方便,但电器在待机状态下仍有能耗。表是小明家两台电器的数据统计。这两台电器每天待机共耗电__________度。若能及时断开电源,他家每月可以节约电费___________元。(电价为0.45元/度,每月按30天计算)
Which of the following is NOT true of meditation
A.It relieves the pain of cancer.
B.It counteracts the effect of depression.
C.It has mystic elements.
D.It has long been used as a cure-all.