【单选题】Please tell the function(s) of the underlined part(s) in each sentence.Tom flung open the door and rushed out of the room, totally losing his calmness.
【单选题】Please tell the function(s) of the underlined part(s) in each sentence. Tom flung open the door and rushed out of the room, totally losing his calmness. ·
【简答题】苯的同系物中,有的侧链能被酸性高锰酸钾溶液氧化,生成芳香酸,反应如下: (R、R′表示烷基或氢原子) (1)现有苯的同系物甲、乙,分子式都是C 10 H 14 .甲不能被酸性高锰酸钾溶液氧化为芳香酸,它的结构简式是 ;乙能被酸性高锰酸钾溶液氧化为分子式为C 8 H 6 O 4 的芳香酸,则乙可能的结构有 种. (2)有机物丙也是苯的同系物,分子式也是C 10 H 14 ,它的苯环上的一溴代物只有一...