选择题：2. Why were overhead bridges built in Beijing?A. B

题目内容：
2. Why were overhead bridges built in Beijing?
A. Because they prevent traffic from being held up.
B. Because they provide an easy way for the drivers to cross the road.
C. Because they save money for the government.
D. Because they save time for the pedestrians.
参考答案：

普通粗制螺栓和普通精制螺栓在抗剪设计强度上取值有差别，其原因在于( )

普通粗制螺栓和普通精制螺栓在抗剪设计强度上取值有差别，其原因在于( ) A.螺栓所用的材料不同B.所连接的钢材的强度不同C.所受的荷载形式不同D.螺栓制作过程和

分类：河北建筑工程学院-建筑工程技术（专科）-大学英语1  题型：选择题
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