【单选题】The word 'phantom'(Line 2, Paragraph 4)probably means
【单选题】从汽轮机中间抽汽对外供热的汽轮机称为(??? )。
【简答题】鸟类的双重呼吸是指每呼吸一次在气囊和肺里各进行一次气体交换.______.
【判断题】The word hero comes from Rome.
【简答题】The word 'intriguing' in paragraph 3 refers to ______. A) tractable B) dauntless C) heroic D) appealing
【判断题】The word hero is not used to describe survivors.
【单选题】汽轮机内蒸汽流动总体方向大致平行于转轴的汽轮机称为()
【判断题】the word hero is not used to describe survivors.