泵控型液压系统采用()调速。
A、容积
B、节流
C、A或B
D、A+B
参考答案:A
He claimed _____ in the restaurant last Sunday. [ ]
A. to be treated badly
B. being badly treated
C. to have badly treated
D. to have been treated badly
梭形肌的纤维与肌肉长轴平行。