单项选择题
A.lining B.lined C.made D.in
A.forged B.cast C.made D.shrunk
A.bending stresses弯曲应力 B.torsion stresses扭转应力 C.shear stresses剪应力 D.All of the above
A.tension stretch B.tie rods C.through bolts D.main bearings
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