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【单选题】
使用测微螺旋和照准部微动螺旋时,要求最后旋转方向为“旋进”,是为了消除( )的影响。A.
照准部旋转引起底座位移
B.
微动螺旋间隙差
C.
照准部旋转引起底座弹性扭转
D.
度盘中心差
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举一反三
【单选题】— She's really pretty, isn't she? Her skin looks so baby smooth! — Well, it's just that she puts lots of make-up on her face. _______ . [ ]
A.
Sometimes I wish I could be as beautiful
B.
Actually, natural beauty comes from inside
C.
I can believe she is still so pretty after giving birth to a baby!
D.
Fortunately, she has a good income.
【简答题】根据红细胞内所含的（）不同，将人的血型分为四种类型，即（）型血、（）型血、（）型血、（）型血。
【简答题】根据红细胞内所含____的不同,将人的血型分为四种类型,即____型血、____型血、____型血和____型血。
【单选题】— I often walk home after school. — ______. [ ]
A.
So she is
B.
So is she
C.
So she does
D.
So does she
【单选题】According to the passage, the blue jeans' popularity was caused by ______.
A.
nineteenth-century laborers
B.
American film and media
C.
the unfolding of popular culture
D.
the imaginations of city folk
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