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【单选题】
细菌性痢疾所致肠道溃疡的形态是（）。A.
溃疡长轴与肠长轴垂直
B.
溃疡长轴与肠长轴平行
C.
溃疡呈地图状
D.
溃疡呈烧瓶状
E.
溃疡边缘堤状隆起
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反馈参考答案：
举一反三
【单选题】The evil manners would be ______ root and branch due to the forceful action taken by the local government.
A.
exterminated
B.
exemplified
C.
facilitated
D.
emitted
【单选题】A vessel may be unable to take proper and effective action due to the speed（）too high or，in some circumstances，too low.
A.
is
B.
is to be
C.
will be
D.
being
【单选题】About the forming mechanism of action potential, ascending branch is due to ( )
A.
K+ excurrent flow
B.
K+ incurrent flow
C.
Na+ excurrent flow
D.
Na+ incurrent flow
【单选题】The one-way nature of action potential propagation down an axon is primarily due to
A.
sodium ion depletion
B.
potassium ion depletion
C.
the refractory period
D.
ATP loss
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