Flight delays in service management, given the evaluation system of indicators to quantify by line.

在航班延误服务管理方面，给出评价体系，对指标经行量化。

youdao

Flight delays in service management, given the evaluation system of indicators to quantify by line.

在航班延误服务管理方面，给出评价体系，对指标经行量化。

youdao