圆筒形压力容器壁厚方向上应力分布不均匀,材料利用()。
参考答案:不够合理
—Which basketball player do you like best, Kobe, James or Jordan?
— _______ of them. Lin shuhao is my favorite. [ ]
A. All
B. None
C. Either
D. Neither
当发电机的电压低于额定值的95%时,其定子电流不得大于多少?