Сколько потребуется каменного угля, чтобы расплавить 100 т чугуна, взятого при температуре 20 °С, если КПД печи 40%

Hkolnik32 Hkolnik32    1   17.04.2019 00:50    5

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Mashylka999 Mashylka999  31.05.2020 12:33

Now I'd like to tell you about my hobby.  As for me, I'm fond of dancing.  So I couldn't help taking it up. I have dance lessons twice a week. But for me it's not enough and now I'm thinking of taking up ballet in theatre.  Of course, it will take to much time, because lessons there are hold every dayfrom 2.00 to 5.00 . By I do my best to order to manage everything. Moreover,  I like writing poems. And I have joined in many competitions. I won two medals for the best poem. My parents support me and of course they are proud of me. I have already thought about my future career.  Probably I will be a ballet dancer, but I have always dreamt of writing my own book too.

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