【单选题】大学生除了要把握自己之外还要超越自己,要做到超越自己需具备的条件不包含下列哪一项:()
【简答题】JAC牌货车的运输率是拖拉机的2.5倍,大型集装车的运输率是JAC牌货车的3倍,现有一堆货物,用JAC牌车运,要6小时,如果改用拖拉机运一半,再用大型集装车运另一半,一共要用多少小时?
【单选题】大学生除了要把握自己之外还要超越自己,要做到超越自己需具备的条件不包含下列哪一项?()
【单选题】Which of the following is NOT true about the American transportation in the 1860s?
A.
The impact of railroads was still limited.
B.
Passengers and freight had to transfer from railroads to other modes of transportation to reach western destinations.
C.
Wagon freighters continued operating.
D.
Railroad travel was quite expensive.
【简答题】[A] the 1860s [B] 1860’s [C] the 1860 [D] 1865s
【简答题】指出符合下列各特征元素的名称: (1) 具有 1s 2 2s 2 2p 6 3s 2 3p 6 3d 8 4s 2 电子层结构的元素; (2) 碱金属族中原子半径最大的元素; (3) II A 族中第一电离能最大的元素; (4) VII A 族中具有最大电子亲合能的元素; (5) +2 价离子具有 [Ar]3d 5 结构的元素;