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S darčekovým poukazom nešliapnete vedľa. Obdarovaný si za darčekový poukaz môže vybrať čokoľvek z našej ponuky.
This book mainly introduces and analyzes the management of urban rail transit service, including the requirements and subdivisions of urban rail transit service, traffic service design, traffic service quality standard, traffic service quality evaluation, traffic service quality control, traffic service assistance and so on.