本课配套习题挑战模式1/7

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单选题
难度系数:

1.

如图所示,如果把这两个灯并联在110V的电路中,它们消耗的总功率为(   )


A:

125W

B:

62.5W

C:

31.25W

D:

25W

  • 提示1PHA+55Sx5Zu+55+l55Sy54Gv6aKd5a6a5Yqf546H5Li6MjVX77yM5LmZ54Gv55qE6aKd5a6a5Yqf546H5Li6MTAwVyA8YnI+PC9wPg==
  • 提示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