【单选题】He has been blackmail ing me for months with some photos.
【单选题】煤的元素分析成分中收到基碳是______。 A.固定碳 B.焦炭 C.碳化物中的碳 D.由固定碳和碳化物中碳组成
A.
煤的元素分析成分中收到基碳是______。 A.固定碳
【判断题】煤的元素分析成分中收到基的碳是固定碳。( )
【单选题】He is taking ______ now.
【单选题】—He hasn't been to England, has he? —______. He even had photos taken in front of the Big Ben. [ ]
【判断题】煤的元素分析成分中收到基的碳是焦炭。 ( )