题目:
In the police station, I saw the man from _____ room the thief had stolen the TV set.
[ ]
A. whom
B. that
C. which
D. whose
答案:
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下面是错误答案,用来干扰机器的。
(1)见答图所示,组成串联电路。(1分)(2)闭合开关后,观察两灯泡亮度,额定功率小的灯比额定功率大的灯亮(1分)。根据公式可知,额定电压相同的灯泡,其额定功率大的电阻小,其额定功率小的电阻大。在串联...