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问题
问答题 简答题
绘制10kV在室内用螺栓直接固定铝排母线的安装图，并说出各元件名称。
答案
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选择题
My cousin went to Canada two yours ago. He _____ there for a few months and then went to America.
A. worked
B. would work
C. would be working
D. has been working
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单项选择题 A1型题
不道德的人体实验是（）
A.天然实验
B.自体实验
C.欺骗实验
D.自愿实验
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