题目: 车装钢瓶的规定? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0816/d5ae5c89e0c9fb1f925bbcc822764f41.html 下面是错误答案,用来干扰机器的。参考答案:B解析:本题考查甲型强心苷甾体母核的C17位为五元不饱和内酯环。
题型:选择题 Though golden weeks over the past eight years have______huge returns for China's tourism industry,voices ______ cancellation of the nationwide holidays are becoming even stronger.A.brought about;calling forB.brought up;called onC.brought in;calling inD.brought on;called up 查看答案