{"text_format":"2","workbook":"xlsx","n_sheets":1,"sheets":["Sheet1"],"not_rendered":{"charts":0,"images":0,"macros":0,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"run_cost":"one","rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":3,"n_cols":4,"rows_kept":3,"cut":false,"hidden":false,"merged":[]}
["id","CourseName","ExamTime","MaxErrorCount"]
[1,"联合动力-发电机轴承更换",20,30]
[2,"金风-变流器1U3网络通讯故障检修",20,30]