皮皮学,免费搜题
登录
搜题
【简答题】
有机物A~F存在如下转化关系,A的化合物的水溶液呈弱酸性,A、C分子中含C、H两的质量分数和均为85.19%,相对分子质量均为108。F含两个环且有一个对位甲基。 请回答下列问题: (1)写出化合物A的分子式____________,B的结构________________。 (2)与C具有相同环的同分异构体共有_____________(含C)种,请写出其中两种不同类别有机物的结构(除C外)__________________、______________________。 (3)A中处于同一平面上的原子最多有__________个。 (4)写出F的结构____________________。 (5)写出反应④的化学方程式_________________________________
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
【简答题】在平面直角坐标系中,点P从原点O出发,每次向上平移2个单位长度或向右平移1个单位长度. P从点O出发 平移次数 可能到达的 点的坐标 1 次 (0,2)(1,0) 2 次 3 次 实验操作 在平面直角坐标系中描出点P从点O出发,平移1次后,2次后,3次后可能到达的点,并把相应点的坐标填写在表格中. 观察思考 任一次平移,点P可能到达的点在我们学过的一次函数的图像上,如:平移1次后点P在函数____...
【简答题】So let us begin anew,remembering on both sides that civility is not a sign of weakness... (Para.14)
【简答题】X plc has a bad debt policy whereby aged receivables who are obviously not going to pay, are written off. The financial accountant does not enforce this policy. This might be fraudulent insofar as it ...
【单选题】一般情况下,会计师事务所不应向属于上市公司的审计客户提供( )
A.
与财务报表相关的内部审计服务
B.
与财务报表相关的工资服务
C.
编制将要发表意见的财务报表
D.
编制财务报表依据的财务信息
【简答题】如图,在平面直角坐标系中,函数 (x>0,k是常数)的图像经过A(1,4),B(m,n),其中m>1,过点A作x轴的垂线,垂足为C,过点B作y轴的垂线,垂足为D, AC与BD相交于点E,连结AD。 (1)求这个反比例函数的解析式; (2)若△ABD的面积为4,求点B的坐标; (3)在(2)得条件下,请你求出直线AB的解析式; (4)请你直接写出线段AB的长是________。
【单选题】So let us begin anew, remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof.
A.
polite behavior
B.
rude person
C.
polite citizen
D.
rough manners
【单选题】李某2018年出版了中篇小说一部,取得稿酬5000元,同年该小说在一家晚报上连载3回,取得稿酬3800元。李某以上稿酬所得计税次数为
A.
2次
B.
1次
C.
5次
D.
4次
【单选题】So let us begin anew , remembering on both sides that civility is not a sign of weakness.
A.
newly
B.
freshly
C.
repeatedly
D.
again
【单选题】So let us begin anew--remembering on both sides that civility is not a sign of weakness, and sincerity is always subject to proof.
A.
curiosity
B.
embarrassment
C.
humility
D.
Politeness
【单选题】X plc has a bad debt policy whereby aged receivables who are obviously not going to pay, are written off. The financial accountant does not enforce this policy. This might be fraudulent insofar as it ...
A.
It removes funds from the business
B.
It results in the understatement of profits and net assets
C.
It results in the overstatement of profits and net assets
D.
It results in the intentional overstatement of profits and net assets
相关题目: