沥青混合料的沥青材料的标号应根据______等因素选择。
A．路面类型
B．矿料级配
C．气候条件
D．施工方法
参考答案：A,C
There are some health problems that , when _______ in time , can become bigger ones later on.
A．not treated
B．not having treated
C．not to be treated
D．not having been treated
骨盆骨折最重要的体征是（）
A.畸形
B.反常活动
C.局部压痛及间接挤压痛
D.骨擦音及骨擦感
E.肿胀及淤斑
