沥青路面抗滑能力的大小主要与()有关。
A.粗糙程度
B.平整度
C.渗透性
D.横坡大小
参考答案:A
It is commonly assumed that the growth of GDP and the development of people’s living conditions are not _______cause and effect.
A.nearly
B.possibly
C.purposely
D.necessarily
我国甲肝疫苗属于()
A.灭活疫苗
B.减毒活疫苗
C.合成疫苗
D.DNA疫苗
E.基因工程疫苗