1.) Альтернативный вопрос (вопрос с хвостиком):
The gas gathering and transmission companies have no direct contact with the ultimate consumer, have they?
2.) Cпециальный вопрос:
Who the gas gathering and transmission companies have no direct contact with?
3.) Разделительный:
The gas gathering and transmission companies have no direct contact with the ultimate consumer or with other organisations?
4.) Вопрос к подлежащему:
Who have no direct contact with the ultimate consumer?