【单选题】在出行选择交通工具时,我可以选择火车,也可以选择飞机,也能选择汽车。这体现了旅游交通的什么特点。
【简答题】有一线性表的顺序表示 (a 1 ,a 2 ,... ,a n ) ,设计一算法将该线性表逆置成逆线性表(a n ,a n-1 ,... ,a 1 ),要求用最少的辅助空间。
【单选题】What caused people in the scientific community to start to think about black holes in a new way?
A.
Albert Einstein presented his theory of relativity. .
B.
New telescopes began to be widely used.
C.
Astronauts in the 1960s brought back new information.
D.
Advances in physics proved black holes existed.
【多选题】共青团要把 ( ) 作为工作主线,广泛组织动员广大青年在深化改革开放,促进经济社会发展中充分发挥生力军作用。
【判断题】若 AB=BA,则(AB) k =A k B k
【单选题】八分书笔画有波势,撇和捺像“八”字一样左右分开,它指的是哪种字体?()