挑战习题
1/5单选题
难度:

1.以下几组答案中,元件均为用电器的是(  )
A 电灯、开关、导线
B 电灯、开关、电池
C 电灯、电铃、电炉
D 电灯、电池、电炉
提示1:
55So55S15Zmo5bCG55S16IO96L2s5YyW5oiQ5YW25a6D5b2i5byP6IO955qE
正确答案:Qw==
5a+857q/5piv5p2l5Lyg6L6T55S16IO955qE77yb5byA5YWz5piv5o6n5Yi255S16Lev55qE6YCa5pat77yM5pWFQULplJnor6/vvJvnlLXmupDmmK/mj5DkvpvnlLXog73vvIzlsIblhbblroPlvaLlvI/nmoTog73ovazljJbkuLrnlLXog73vvIzmlYVE6ZSZ6K+v77yb55S154Gv44CB55S16ZOD44CB55S154KJ562J6YO95piv5raI6ICX55S16IO977yM5bm25bCG55S16IO96L2s5YyW5Li65YW25a6D5b2i5byP55qE6IO977yM5pWFQ+ato+ehru+8juaVhemAiUPvvI4=