【单选题】The police started to make random checks of cars and trucks.
A.
The police began to make random inspections of cars and trucks.
B.
Random inspections of motor vehicles began to be made by the police.
【单选题】如果学术报告厅中部署了多个AP,为了防止信号相互干扰,对于这些AP,需要调整以下哪一项?
【简答题】县教育局为了了解我县中小学校实施素质教育的情况,抽查了某校七年级甲、乙两个班的部分学生,了解他们在一周内(周一到周五)参加课外活动的次数情况,抽查结果如图所示,请根据有关信息回答下列问题: (1)在这次抽查中,甲班被抽查了多少人?乙班被抽查了多少人? (2)在被抽查的学生中,甲班学生参加课外活动的平均次数是多少?乙班学生参加课外活动的平均次数是多少? (3)根据以上信息,用你学过的知识,估计甲、乙...
【简答题】在电子商务环境中,企业业务活动中的信息流由直线型结构转化为一种______结构。
【单选题】—If people make small changes, like taking buses instead of driving cars, it will make a big difference. —_____. Then the traffic will be much better.