一项工作甲、乙单独做分别要30天和20天完成,现由两人合作,中间甲、乙各休息几天,这样比预定日期推迟8天,已知乙的工作日是甲的,求甲、乙各休几天?( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧