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【单选题】
结构动力学 图示三种跨度相同,支撑情况不同的单跨梁,不考虑梁的质量, 自振频率最大的是 。A.
a
B.
b
C.
c
D.
无法判断
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【简答题】查出)metals when people walk through.
【单选题】According to the author, how are the metals and people alike?
A.
They are both strong
B.
They both suffer from stress
C.
They are easy to snap
D.
They will snap when the level of stress is over a point
【简答题】According to the text, in what way are people like metals?
【单选题】According to the author, in what way are the metals and people alike?
A.
They are both strong.
B.
They both suffer from stress.
C.
They are easy to snap.
D.
They will snap when the level of stress is over a point.
【简答题】中医学理论体系的主要特点是()和()。
【简答题】单向晶闸管可以理解为一个 的二极管。
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