相关考题
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单项选择题
沥青混合料施工温度应根据沥青品种、标号、黏度、气候及铺筑厚度等条件按规范要求选用。当沥青黏度大、气温低、铺筑厚度小时，施工温度宜用（）。
A．经验值
B．低限
C．高限
D．中值 -
单项选择题
(71)（）
A. Successful relationships often result in marriage, and the wedding plans themselves can be a major struggle.
B. Once married, mixed race couples face more decisions concerning holiday traditions, religious worship and children.
C. While there are many issues faced by those in interracial relationships, the friendships and romances are often worthwhile and fulfilling.
D. There are, however, certain issues such as faith, cultural traditions and racism that can cause tension and discomfort in the relationship.
E. Unfortunately, many of these relationships go unnoticed because the couples feel that either friends or family will not approve.
F. When preparing for interracial weddings, many of the parents feel that their cultural traditions are being denied and can cause problems. -
单项选择题
下列四个命题中为真命题的一个是（ ）
A.如果两个不重合的平面有两个不同的公共点A，B，那么这两个平面有无数个公共点，并且这些公共点都在直线AB上
B．如果一条直线和一个平面平行，则它和这个平面内的任何直线平行
C．如果一条直线垂直于—个平面内的两条直线，则这条直线垂直于这个平面
D．过平面外一点，有无数条直线与这个平面垂直
