【简答题】A hollow shaft has an outside diameter of 35 mm and an inside diameter of 25 mm. Compute the torsional shear stress in the shaft when it is subjected to a torque of 560 N·m.
【单选题】The hollow 6061-T6 aluminum shaft has an outer and inner radius of co 60 mm and ci 20 mm, respectively. The angle of twist of end A is ( ).The flexible support at B has a torsional stiffness ...
【简答题】一场比洞赛中,A的第二杆打向果岭,但是他无法找到自己的球。B的第二杆攻上了果岭,于是A向B认输了这个洞。后来,后面的球员发现A的球其实已经进了球洞。该如何判决?
【单选题】()是51单片机与定时器1工作有关的内部寄存器。