题目

—Tom graduated and got his degree in Business management.    —      .      A. Good luck!    B. Congratulations!   C. Thanks God!   D. So what? 答案：B 将标有“220 V　200 W”和“220 V　40 W”字样的两只灯泡串联后，接入380 V的电路中，将会烧坏哪一只灯泡？