Nick Goodman
Гуру
(2648)
4 года назад
общий: Does crude oil contain any wax?
альтернативный: Crude oil contains varying or constant amounts of wax?
специальный: How much wax crude oil contains?
вопрос к подлежащему: What contains varying amounts of wax?
разделительный: Crude oil contains varying amounts of wax, doesn't it?