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【判断题】
凡壳体，只要其几何形状和所受载荷对称与旋转轴，则壳体上任何一点用薄膜理论应力公式求解的应力都是真实的。A.
正确
B.
错误
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举一反三
【单选题】I'm thirsty. I'd like ______ a glass of water. [ ]
A.
drink
B.
to drink
C.
drinking
D.
drank
【单选题】It's important ______ a lot of water when you have a cold. [ ]
A.
to drink
B.
drink
C.
drinking
D.
for drinking
【单选题】We _______ work very quickly.
A.
don’t need
B.
needn’t to
C.
need not to
D.
don’t need to
【单选题】The doctor told him _______ more water. [ ]
A.
drink
B.
to drink
C.
drank
D.
drinking
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