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【单选题】
梁平面弯曲的叙述中错误的是()。A.
外力均作用在纵向对称的平面内
B.
外力可作用在宽度内
C.
中性层以上为受压区，以下为受拉区
D.
梁弯曲变形时所有横截面均绕鸽子的中性轴转动
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反馈参考答案：
举一反三
【单选题】The story tries to tell us ______.
A.
that a bad impression is easily left on the train
B.
that young people should behave well on the train
C.
that people with bad manners are not welcome
D.
not to leave things behind when travelling by train
【单选题】If my letter __________ the impression that I was impolite,please forgive me. [ ]
A.
translated
B.
conveyed
C.
concluded
D.
predicted
【单选题】The people and things ______ I saw during my visit to the city left a deep impression on me.
A.
that
B.
which
C.
what
D.
in which
【单选题】My impression of the service in the hotel was that it had really ______.
A.
imagined
B.
implied
C.
imported
D.
improved
【多选题】Choose the words that need to be capitalized in the following titles. 1) my impression of beijing
A.
my
B.
impression
C.
of
D.
beijing
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