A.大于或者等于50mg/100ml B.大于或者等于60mg/100ml C.大于或者等于70mg/100ml D.大于或者等于80mg/100ml
A.大于或者等于10mg/100ml,小于70mg/100ml B.大于或者等于10mg/100ml,小于80mg/100ml C.大于或者等于20mg/100ml,小于80mg/100ml D.大于或者等于20mg/100ml,小于70mg/100ml
A.間歇制動 B.持續(xù)制動 C.緩踏制動踏板 D.緊急制動