Pytanie | Odpowiedzi | Data utworzenia |
---|---|---|
1. A 30m section of railway track is installed on a cold winter day at -5°C, each | 3 | 23.6.2011 (01:10) |
Pytanie | Odpowiedzi | Data utworzenia |
---|---|---|
1. A 30m section of railway track is installed on a cold winter day at -5°C, each | 3 | 23.6.2011 (01:10) |