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【单选题】
对于直接接入电路中的单相电能表,其电压线圈的额定电压应为( )A.
100V
B.
380V
C.
与线路额定电压相同
D.
220V
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反馈参考答案：
举一反三
【单选题】听力原文：Which of the following statement is true according to the passage? (15)
A.
Tom missed his meeting.
B.
The taxi drivers in New York were on strike.
C.
There was an accident on his flight.
D.
He still attended the meeting owing to having met his friend by chance in Washington.
【简答题】测得电路中A、B、C三点的电位:VA=2V,VB=5V,VC=0V,则:参考点是______________点,UAB=______________。
【单选题】下列有关郑和下西洋的描述中,不正确的是()。
A.
船队最远到达了非洲东海岸
B.
明朝大臣刘大夏曾下令焚毁相关档案
C.
对世界和中国产生了重大而深远的意义
D.
郑和曾七次下西洋
【单选题】The child was sorry______his mother when he arrived at the station.
A.
to miss
B.
having missed
C.
missing
D.
to havc missed
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