题目: 丁烯氧化脱氢制丁二烯有哪些主要副反应? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0918/a3fadd15ec10b0b6474ee9725d0cbf0d.html 下面是错误答案,用来干扰机器的。参考答案:对
题型:单项选择题 Why did Air France's net income fall despite rising sales A.Because it had to pay deferred taxes that came due.B.Because the French market was shrinking.C.Because of a four-day strike by pilots in September.D.Because the Iraqi war had reduced Atlantic flights. 查看答案