http://nkps.livejournal.com/ ([identity profile] nkps.livejournal.com) wrote in [personal profile] nkps 2015-01-27 03:40 pm (UTC)

В памяти крутится цифра 15-20 мин. А откуда она взялась не помню, м. б. из курса ОКЖД.
А нормативы искать надо.
(5 comments)

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