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【单选题】
毕脱氏斑的形成是由于A.
核黄素缺乏
B.
硫胺素缺乏
C.
体内脂质过多
D.
维生素A摄入过量
E.
维生素A摄入不足
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举一反三
【单选题】Where was John and his wife's restaurant?
A.
Near a station.
B.
In a station.
C.
On a train.
【简答题】A．At a cigarette store. B．At a bus station. C．At a gas station. D．At Aunt Mary's.
【单选题】--- Does your cousin work at the police station? --- No. He’s _______. He works at the TV station.
A.
a policeman
B.
a bank clerk
C.
a reporter
D.
a doctor
【单选题】At the public radio station KEXP in Seattle, there's a simple procedure for evaluating new technology. 'We just go ahead and do stuff,' says one of the station's morning disc jockeys. That's how the q...
A.
end-users experimenting to use
B.
government authorities certifying
C.
industrial experts testing to endorse
D.
third-party providing assessment on
【单选题】______ was the world's first intercity passenger station.
A.
Liverpool Road railway station
B.
Broad Green railway station
C.
Crown Street railway station,
D.
The Mount
【单选题】当四杆机构出现死点位置时,可在在从动曲柄上()使其顺利通过死点位置。
A.
加大主动力
B.
增大链条节距和减小链轮齿数
C.
减小链条节距和增大链轮齿数
D.
减小链条节距和链轮齿数
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