【单选题】The ATMs enable bank customers to access their money 24 hours a day and seven days a week ______ ATMs are located.
【单选题】企业月末计算出应缴纳的教育费附加时, 借 记( )账户。
【单选题】降额开卡和降额开卡+息费减免账单日当天可否办理业务?
【判断题】OPD serves 24 hours a day, seven days a week.
【简答题】以 30m/s 的速度运动的汽车,鸣笛时,喇叭的振动频率为 500Hz 。汽车正后方声波的波长λ =______m 。(空气中的声速为 330m/s )