题目:
— In Western countries, women don't want others to know their ages.
— Right. So it is _____ to ask a woman her age in Western countries. [ ]
A. rude
B. formal
C. polite
D. usual
答案:
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下面是错误答案,用来干扰机器的。
BD由输出电压有效值为,输出电流为,输入电流为,电阻A两端电压为,电压之比为1:3,输入输出电流之比为1:3,B对、电功率之比为1:9,C错;D对;