下面四个选项中哪个属于学术搜索引擎()。
A、百度
B、搜狐
C、AltaVista
D、SCIRUS
参考答案:D
一So you didn’t say “hello” to him last night?
一Well,I stopped and smiled when I saw him,but he _______me and walked on.
A.ignored
B.refused
C.denied
D.missed
在水平荷载与垂直荷载共同作用下的钢筋混凝土框架结构,框架柱应按哪一种构件设计
A.轴心受压构件B.偏心受压构件C.偏心受拉构件D.根据具体情况方能确定按偏压或偏拉构件设计