皮皮学，免费搜题
登录
搜题
【单选题】
芳香烃的热稳定性很高,在一般的裂解温度下不易发生( )的反应,但可发生两类反应一类是芳烃脱氢缩合反应,另一类烷基芳烃的侧链发生断链生成苯、甲苯、二甲苯等反应和脱氢反应。A.
芳烃脱氢缩合
B.
结焦
C.
芳环裂化
D.
侧链裂化反应
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】公司在清算期间开展与清算无关的经营活动,由( )予以警告,没收违法所得。[2015年11月真题]
A.
公司股东大会
B.
人民法院
C.
公司登记机关
D.
公司董事会
【单选题】已知5个正数a 1 ，a 2 ，a 3 ，a 4 ，a 5 的平均数是a，且a 1 ＞a 2 ＞a 3 ＞a 4 ＞a 5 ，则数据：a 1 ，a 2 ，a 3 ，0，a 4 ，a 5 的平均数和中位数是（ ）
A.
a，a 3
B.
a， a 3 + a 4 2
C.
5 6 a， a 2 + a 4 2
D.
5 6 a ， a 3 + a 4 2
【简答题】已知（1﹣x） 5 =a 0 +a 1 x+a 2 x 2 +a 3 x 3 +a 4 x 4 +a 5 x 5 ，则（a 0 +a 2 +a 4 ）（a 1 +a 3 +a 5 ）的值等于（ ）
【简答题】A)Because they are minority English speakers. B)Because they don’t speak second language. C)Because they English is not better than anyone else’s. D)Because they lose control of English resources.
【简答题】People think you are boastful and rather aggressive. They don’t trust you and they don’t want to have too much to do with you.
【简答题】For some students, the reason is not that they don’t put in enough time, but rather that they don’t have good study habits.
【单选题】Translate the sentence into Chinese: One reason introverts shy away from social activities is that they don’t feel comfortable as they don’t know what to do, especially if something unexpected is to o...
A.
Finished
B.
Unfinished
【单选题】Most parents would be surprised to learn this. They certainly don’t plan to talk more with one child than with another. They don’t even realize that this is happening. So why do they do it? Interestin...
A.
Parents who talk more to their baby girls are responding to the fact that girls are a little more developed at birth.
B.
Most parents don’t know that they talk more with their girls and would be surprised to learn this.
C.
Males are a little less developed than females are at birth.
D.
Baby girls make noises and have eye contact a little more than baby boys do.
E.
Baby boys don’t remain alert as long as baby girls do.
【单选题】已知5个正数a 1 ，a 2 ，a 3 ，a 4 ，a 5 的平均数是a，且a 1 ＞a 2 ＞a 3 ＞a 4 ＞a 5 ，则数据：a 1 ，a 2 ，a 3 ，0，a 4 ，a 5 的平均数和中位数是 [ ]
A.
a，a 3
B.
a，
C.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
