I think you can, as there are people not only from Russia(at least I've seen some) and I guess some russian people are also able to answer you in English, but if you want a long and quick answer and if you don't really need to ask it in english then you better ask it in Russian
Exactly!
You've already done it.
If administrators will not delete neither your question, nor that comment, then the answer is "yes".
If administrators remove only my comment... then the answer is still "yes" :-)
But it is not allowed to respond in English.