问题
选择题
I hope to go to France some day ____ there are many famous art museums. [ ]
A. when
B. if
C. because
D. whose
答案
答案：C
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I hope to go to France some day ____ there are many famous art museums. [ ]
A. when
B. if
C. because
D. whose
答案：C
，仍接入原电路里（电源电压不变），此时电炉的实际功率是（ ）
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