设置警冲标的依据是以()机车车辆发生侧面冲突为原则。
A.控制
B.防止
C.杜绝
D.防范
参考答案:B
New York is one of ____ in the world. [ ]
A. the large cities
B. the large city
C. the largest cities
D. the largest city
若持续10周给小鼠饲以80mg./kg体重的苯甲酸,可致小鼠32%死亡。