I must seem completely seem out of place nowadays, but I actually learned that in school in Germany. Not to the nitty gritty detail, of course, but we spent a double lesson on every reactor type. What I've taken from it and remember to this day is that you usually can determine the reactor type from the shape of the building.
Funny that it specifies a graphite moderator. Almost every country uses water as the moderator except Britain, which uses graphite moderated gas cooled reactors.
