挑战习题
1/5单选题
难度:

1.在国际单位制中,电功率的单位是()
A 瓦特
B 伏特
C 焦耳
D 欧姆
提示1:
5Li65LqG57qq5b+156eR5a2m5a6255Om54m577yM5oiR5Lus5bCG55S15Yqf546H55qE5Y2V5L2N5Lul55Om54m555qE5ZCN5a2X5ZG95ZCN
正确答案:QQ==
5Zyo5Zu96ZmF5Y2V5L2N5Yi25Lit77yM55Om54m55piv55S15Yqf546H55qE5Y2V5L2N77yMQemAiemhueespuWQiOmimOaEj++8m+S8j+eJueaYr+eUteWOi+WNleS9je+8jOS4jeespuWQiOmimOaEj++8m+eEpuiAs+aYr+iDvemHj+WNleS9je+8jOS4jeespuWQiOmimOaEj++8m+asp+WnhuaYr+eUtemYu+WNleS9je+8jOS4jeespuWQiOmimOaEj++8m+aVhemAiUEu