{"text_format":"3","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":3,"n_cols":3,"rows_kept":3}
["标志","电话号码","联系人"]
["(1:呼入,2:呼出,3:呼入/呼出, 提交时请删除这行)"]
[3,18000000000,"张三"]