【单选题】One way __________ in many big cities is to take the subway.
【简答题】旅游公司为3个旅游团提供4条旅游线路,每个旅游团任选其中1条: (1)求3个旅游团选择3条不同线路的概率;(2)求恰有2条线路没有被选中的概率;(3)甲线路没有被有选择的概率.
【单选题】有氧运动是指人体在氧气充分供应的情况下进行的体育锻炼,衡量有氧运动的指标是 ( )。
【单选题】以下哪一个不是选择电商文案的诉求方式 ()
【简答题】One way to ____ in many big cities is ___ ____ the subway. 在很多大城市,你可以选择搭地铁作为出行方式。
【简答题】Crazy Town, U.S.A. Towns get their names in many ways. One town in Wyoming is called Ten Sleep. People there had their own way of telling how far away a place was. They would tell how many nights one ...
【简答题】旅游公司为3个旅游团提供4条旅游线路,每个旅游团任选其中一条. (1)求3个旅游团选择3条不同的线路的概率; (2)求选择甲线路旅游团数的分布列和期望.
【判断题】有氧运动是指人体在氧气充分供应的情况下进行的体育锻炼。
【单选题】One way to travel in many big cities is to_____ the subway.