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问题
单项选择题
在主配电板上,兆欧表通常设在()屏上。
A.发电机控制
B.并车
C.负载
D.报警
答案
参考答案:
C
判断题
市值加权法下模拟组合最终的计算结果应该是买卖股票的手数。()
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选择题
—I'm sorry to have kept you waiting.
—Oh, not at all. I ____ here only for a few minutes.
A. have come
B. had been
C. was
D. have been
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