题目

Aside from the potential health hazards(危害) ________ can cause to the people, nuclear energy can also cause thousand deaths when its reactor explode. A . which B . that C . what D . it 答案：D关于安全用电，下列说法正确的是（ ）A．用湿布擦正在发光的白炽灯或日光灯B．家庭电路应安装保险盒或空气开关C．人跟火线接触，一定会发生触电事故D．更换灯泡不必断开控制灯泡的开关