由乙烯制取二氯乙烷,反应式为C2H4+Cl2 ClH2C-CH2Cl。通入反应的乙烯量为600Kg/h, 其中乙烯含量为92%(wt%),反应后得到二氯乙烷为1700 Kg/h,并测得尾气中乙烯量为40 Kg/h, 则乙烯的转化率、二氯乙烷的产率及收率分别是( ) A. 93.3% 94% 92.8% B. 93.3% 95.1% 93.2% C. 94.1% 95.4% 93.1% D. 94.1% 95.6% 96.7%
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【简答题】Once there was a little girl in a village. She spent summers on her grandfather’s farm. The year she was four, she knew some ducks. The ducks were white with orange feet. They lived in a little wooden...