A.無限不循環(huán)小數(shù) B.有限循環(huán)小數(shù) C.有限不循環(huán)小數(shù) D.無限循環(huán)小數(shù)
A.80~100km/h B.100~120lcm/h C.120~140km/h D.140~160km/h
A.制動(dòng)效率50% B.結(jié)構(gòu)緊湊 C.制動(dòng)效率70% D.制動(dòng)效串60%