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【简答题】
肺动脉瓣区第2音亢进和固定分裂多见于:
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举一反三
【单选题】That man is very poor. He even has no room __________.
A.
to live
B.
to live in
C.
living
D.
living i
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力 P 时的 M 图相同。
A.
正确
B.
错误
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力FP时的M图相同。
A.
正确
B.
错误
【单选题】Seldom ______so warmly welcomed.
A.
has he been
B.
he has been
C.
was he
D.
he had been
【简答题】He is poor. He has hardly enough to live on.
【单选题】Never in his whole life ______such a stupid thing.
A.
did he do
B.
has he done
C.
he has done
D.
he did
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力作用时的弯矩图相同
A.
正确
B.
错误
【单选题】Although he has taken a lot of medicine, his health _____ poor. [     ]
A.
stayed
B.
remains
C.
proves
D.
continued
【判断题】简支梁跨中截面弯矩的影响线与跨中有集中力 P 时的 M 图相同。
A.
正确
B.
错误
【单选题】He always has pity _________ the poor.
A.
in
B.
at
C.
for
D.
on