皮皮学，免费搜题
登录
搜题
【单选题】
化学上通常把原子数和电子数相等的分子或离子称为等电子体，研究发现等电子体间结构和性质相似（等电子原理）。化合物B 3 N 3 H 6 被称为无机苯，它与苯是等电子体，则下列说法中不正确的是 [ ]A.
无机苯是仅由极性键组成的分子
B.
无机苯能发生加成反应和取代反应
C.
无机苯的二氯代物有3种同分异构体
D.
无机苯不能使酸性KMnO 4 溶液褪色
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】随机产生 [10,50] 之间整数的正确表达式是( )
A.
Round(Rnd*51)
B.
Int(Rnd*40＋10)
C.
Round(Rnd*50)
D.
10＋Int(Rnd*41)
【单选题】----Do you know why she looks so ________?
A.
--That’s because she doesn’t know how to settle this problem.
B.
cheerful
C.
sad
D.
angry
E.
confused
【单选题】— Do you know why she Mr. Jordan tomorrow ? — She has changed her mind .
A.
won't visit
B.
didn't visit
C.
doesn't visit
D.
hasn't visited
【单选题】Do you know why she looksso ? —She got high marks in the final examinations.
A.
cheerful
B.
sad
C.
angry
D.
confused
【简答题】(1511-83)下面( )构造方法能够根据表格模式初始化一个JTable。 (5.0分)A. JTable (int numRows,
int numColumns) B. JTable ( Object [][] rowData, Object [] columnNames) C. JTable ( TableModel dm) D. JTable ( Vector rowData...
【单选题】Do you know why she is always trying to avoid you? 采用反译法的译文为
A.
你知道她为什么老是躲着你吗？
B.
你知道她为什么老是不想见你吗？
【单选题】— Do you know why she Mr. Wang tomorrow ? — She has changed her mind .
A.
won't visit
B.
didn't visit
C.
doesn't visit
D.
hasn't visited
相关题目：