A.4~6 B.6~8 C.80~100 D.100~17
A.(F/A.×B B.(F/B.×A C.(A/B.×F D.F×A×B
A.前后輪不用分泵 B.使制動力加倍 C.使前后輪的制動系統(tǒng)各自獨(dú)立 D.使前后輪的制動作用結(jié)合一起