多项选择题
A.SUBSTITUTE(A2,销售,营销) B.SUBSTITUTE("销售",A2,"营销") C.SUBSTITUTE("销售","营销",A2) D.SUBSTITUTE(A2,"销售","营销")
A.DATEDIF("2019/9/23","2020/5/23",d) B.DATEDIF("2019/9/23","2020/5/23","m") C.DATEDIF("2020/5/23","2019/9/23","y") D.DATEDIF("2019/9/23","2020/5/23","y")
A.WEEK B.DAY C.TODAY D.WEEKDAY