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Crude oil is a mix...of four different types of ...carbon molecule known as paraffines, naphthenes, aromatics, and asphaltics. The first two are five carbon atoms or longer, aromatic has six or more, and asphaltic between forty and sixty. We can`t do much with crude oil in its natural ..., but these differ... molecules give us the fuels and products we need. In order... use them, they have to be separated from each ... .Crude oil is a mix...of four different types of ...carbon molecule known as paraffines, naphthenes, aromatics, and asphaltics. The first two are five carbon atoms or longer, aromatic has six or more, and asphaltic between forty and sixty. We can`t do much with crude oil in its natural ..., but these differ... molecules give us the fuels and products we need. In order... use them, they have to be separated from each ... .

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Маша5411
Маша5411
4,6(32 оценок)

1. In the morning, I brush my teeth.

2. At lunch time I eat with my friend.

3. At the weekend, we visited a doctor.

4. In the afternoon I'm play computer games.

5. At night I'm sleeping.

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