2O6P型转向架采用()轴箱定位装置。
参考答案:干摩擦导柱式
As well as ________ all his homework, he helped his mother with a good cleaning around the house.
A. finishing B. finished C finishes D. to finish
商事主体按照组织形态可以划分为商个人、商合伙、以及()
A.销售商
B.代理商
C.制造商
D.商事法人