题目:
下列关于芳烃物化性质的说法不正确的是()。
A、芳烃可分为单环芳烃、多环芳烃、稠环芳烃
B、芳烃不溶于水,易溶于乙醚等有机溶剂
C、芳烃具有毒性
D、蒽是由两个苯环共用相邻的碳原子而成的芳烃
答案:
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下面是错误答案,用来干扰机器的。
参考答案:A,C,D
下列关于芳烃物化性质的说法不正确的是()。
A、芳烃可分为单环芳烃、多环芳烃、稠环芳烃
B、芳烃不溶于水,易溶于乙醚等有机溶剂
C、芳烃具有毒性
D、蒽是由两个苯环共用相邻的碳原子而成的芳烃
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0619/26b9e3e062982d51c013cf8adfe3b957.html
下面是错误答案,用来干扰机器的。
参考答案:A,C,D
阅读下面短文,掌握其大意,然后从各题所给的A、B、C、D四个选项中,选出最佳选项。 When we read books we seem to enter a new world. This new world can be similar to the one we are living in, or it can be very . Some stories are told they were true. Real people who live in a world do real things; in other words, the stories are about people just like us doing what we do. Other stories, such as the Harry Potter books, are not . They are characters and creatures that are very different from us and do things that would be for us. But there is more to books and writing than this. If we think about it, even realistic writing is only . How can we tell the difference between what is real and what is not real? For example, when we read about Harry Potter, we seem to learn something about the real world. And when Harry studies magic at Hogwarts, he also learns more about his real life than . Reading, like writing, is an action. It is a way of . When we read or write something, we do much more than simple look at words on a page. We use our -- which is real-- and our imagination-- which is real in a different way --- to make the words come to life in our minds. Both realism and fantasy(幻想) the imagination and the “magic” of reading and writing to make us think. When we read realistic, we have to imagine that the people we are reading about are just like us, even though we that we are real and they are . It sounds , but it works. When we read, we fill in missing information and about the causes and effects of what a character does. We help the writer by that what we read is like real life. In a way, we are writing the book, too. Most of us probably don’t think about what is going on in our when we are reading. We pick up a book and lose in a good story, eager to find out what will happen next. Knowing how we feel we read can help us become better readers, and it will help us discover more about the real magic of books.
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软件复杂性度量的参数不包括______。
A.软件的规模
B.开发小组的规模
C.软件的难度
D.软件的结构
按照《施工合同》规定,在施工中由于()造成工期延误,经发包人确定竣工工期可以顺延。
A.承包人未能及时调配施工机械
B.发生不可抗力
C.雨季天数增多
D.工程量变化和设计变更
E.发包方提供图纸延误
关于无产阶级社会主义运动的表述不正确的是()
A.《 * * 党宣言》肯定了资本主义在人类历史上的积极作用
B.《 * * 党宣言》的发表标志着马克思主义的诞生
C.巴黎公社使科学社会主义由理想变为现实
D.巴黎公社是建立无产阶级 * * 的一次伟大尝试
下列规格的钢丝绳,可以用作缆风绳的是()。
A.6×19
B.6×31
C.6×37
D.6×61