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【单选题】
下列哪个部位形成的假膜性的危险性最大
A.
咽喉
B.
气管
C.
结肠
D.
直肠
E.
回盲部
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A.
正确
B.
错误
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【单选题】---Is it heavy? ---No. It’s as ______as a book.
A.
heavy
B.
heavier
C.
light
D.
lighter
【多选题】某船垂线间长平均分为 9 个站距,其近似计算法可采用( )。
A.
梯形法
B.
辛浦生一法
C.
辛浦生二法
D.
乞贝雪夫法
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