有下列二叉树,对此二叉树前序遍历的结果是( )。 A.ACBEDGFH B.AB 发布时间:2018-05-30 03:18 │ 来源:www.tikuol.com 题型:单项选择题 问题: 有下列二叉树,对此二叉树前序遍历的结果是( )。 A.ACBEDGFHB.ABDGCEHFC.HGFEDCBAD.ABCDEFGH
题型:单项选择题 选择方框内恰当的单词并用其适当形式将短文补充完整. eat sometimes home day before or breakfast after walk My father is very busy. He usually works five __1__ a week from Monday to Friday. __2__ he works on Saturdays _ 3__ Sundays. He often gets up early in the morning. He cooks __4__ for my family. He goes to work at 7:10. He __5__ lunch at his workplace. He comes back _ 6__ at about 6:30. My mothercooks dinner. _ 7 _ dinner he goes out and takes a __8__ in the small garden. _ 9 _ he goes to bed, he often reads some _ 10 _ or watches TV. He goes to sleep very late 查看答案
题型:单项选择题 内侧轨道为1/4圆周的小车的质量为M,半径为R,一个质量为m的物体从小车的顶点由静止滑下,物体滑离小车底端时的速度设为,不计一切摩擦,下列说法中正确的是( )A.物体滑离小车时的速度B.物块滑离小车时的速度C.物块滑离小车时小车的速度D.物块滑离小车时小车的速度 查看答案