当汽车遇到倾角极大的坡道时,由于驱动轮的(),会产生滑转现象。
A.附着力小
B.附着力大
C.驱动力小
D.驱动力大
参考答案:A
Britain's Prince William and Kate Middleton will marry next year in Westminster Abbey, _______
Princess Diana's funeral was held.[ ]
A.when
B.which
C.where
D.as
急惊风惊厥时的首选药物是()
A.水合氯醛
B.地西泮
C.苯巴比妥
D.丙戊酸钠
E.苯妥英钠