制动力分配系数是（）制动器制动力与汽车总制动器制动力之比。
A.后
B.前
C.驱动桥
D.前桥
参考答案：B
It never occurred to me _____ you could succeed in persuading him to change his mind.[ ]
A. which
B. what
C. who
D. that
简述井田制思想的蓝本。
