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【多选题】
汽车用硅整流交流发电机主要由（）组成。A.
断电器
B.
定子
C.
转子
D.
硅整流器
E.
碳刷
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皮皮学刷刷变学霸
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【简答题】患儿，4岁，自1岁时出现口唇青紫，活动后加剧，喜坐少动，胸骨左缘2、3肋间可闻及收缩期杂音，有震颤，动脉血氧饱和度75％，此患儿最可能的诊断是（ ）。
【单选题】According to the man, how do some bees use their sense of smell?
A.
To find their way back to the nest.
B.
To locate plant fibers.
C.
To identify kinds of honey.
D.
To identify relatives.
【单选题】What is indicated about Ms. Stewart?
A.
She currently works at the Maxton branch office.
B.
She has to meet her president on April 7.
C.
She is involved in a company project.
D.
She is Julia Mason's assistant.
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