【单选题】C++ is used with proper____design techniques.
【单选题】An object is supported by a spring attached to the ceiling. What are the forces acting on the object?
A.
The mass of the object in the downward direction and the supporting force of the spring in the upward direction
B.
The mass of the object in the downward direction and the supporting force of the spring in the downward direction
C.
The weight of the object in the upward direction and the supporting force of the spring in the downward direction
D.
The weight of the object in the downward direction and the supporting force of the spring in the upward direction
E.
The weight of the object and the supporting force of the spring
【单选题】预制桩的混凝土浇筑应从桩顶至桩尖连续浇筑,采用叠层法生产时,上层桩和邻桩浇筑,必须在下层和邻桩的混凝土强度达到设计强度的( )以后才能进行。
【单选题】河南是中国古代歌谣特別是( )中作品产生最多的地方。
【判断题】市场营销的目的是为了满足消费者的现实和潜在的需求
【简答题】To prove this to yourself, look at an object out of one eye; then look at the same object out of your other eye. (Passage 1)
【判断题】预制桩的混凝土浇筑,从桩尖到桩顶连续浇筑。
【判断题】27预制桩的混凝土浇筑,从桩尖到桩顶连续浇筑。
【多选题】预制桩施工正确说法是( )
A.
预制桩的钢筋骨架制作,钢筋骨架的主筋连接宜采用对焊。
B.
预制桩的钢筋骨架制作,主筋接头配置在同一截面内数量不超过50%。
C.
预制桩的钢筋骨架制作,同一根钢筋两个接头的距离应大于30d并不小于500mm。