单项选择题
The crankshaft receives and transmits the full working power of the engine and is subjected to fluctuating （）.
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
单项选择题 The crankshaft of diesel engine is supported by （）.
单项选择题 The crankshaft is of the semi-built type, with the （） being shrunk into the forged or cast steel crank throws.
单项选择题 The crankshaft is of the semi built type, with the journal （） the forged or cast steel crank throws.
