福师《近世代数》在线作业二 -0001

adminhan

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/0e3fc999-d391-40a3-af06-a0624d53bb92/2008114161835935.JPG" /></font>
A:A
B:B
C:C
D:D

关于子群的说法正确的是（）
A:无限群的子群是无限群
B:有限群的子群是有限群
C:存在没有子群的群
D:无限群有无限个子群

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/d3e590df-caaf-4786-b913-51b3e1a4f8d8/2008114162042372.JPG" /></font>
A:A
B:B
C:C
D:D

G是群，则G中每个元素的逆元等于自身是G为交换群的（）
A:充分条件
B:必要条件
C:充要条件
D:既非充分也非必要条件

下列说法中错误的是（）
A:任何集合都可以定义适当的运算构成群
B:一个集合可以对多个运算都构成群
C:一个群里面的任何元素都可以作为幺元
D:一个元素可以同时存在多个逆元

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/84919688.GIF" />。
A:错误
B:正确

.<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/f4064a46.GIF" />
A:错误
B:正确

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/65575f77-582f-4cfe-a6ed-e4527888fe84/2008114162925884.JPG" /></font>
A:错误
B:正确

。<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/fec73f9e.GIF" />
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/e9dad736.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/30f4bf85.GIF" />。
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/463bd041.GIF" />
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/993ea45d.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/72559c7e.GIF" />。
A:错误
B:正确

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/278eca41-ae57-4428-a269-a85bbe01bea4/2008114162628948.JPG" /></font>
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/bc909cc9.GIF" />。
A:错误
B:正确

<p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/cdce05b0.GIF" /></p><p>。</p>
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/88a9cdcb.GIF" />。
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/6d4f6a64.GIF" />。
A:错误
B:正确

.<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/463bd041.GIF" />
A:错误
B:正确

<p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/89415e36.GIF" /></p><p>&nbsp;</p><p>。</p>
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/c8af4fae.GIF" />
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/b8ddef7d.GIF" />
A:错误
B:正确

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/ba1c6450-19fd-4aa9-b2c1-5b45b95c408d/2008114162658963.JPG" /></font>
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/c7d7cac5.GIF" />
A:错误
B:正确

.<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/c7d7cac5.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/71579621.GIF" />.
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/69d401d7.GIF" />。
A:错误
B:正确

<font face="Arial">题面见图片<img height="69" alt="" width="586" src="http://file.open.com.cn/ItemDB/11179/3bfa3586-dda3-441a-bac1-5c97072f9c81/2008114162525261.JPG" /></font>
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/de12daf9.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/0ae06b3d.GIF" />。
A:错误
B:正确

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/4771a6e4-18f7-482b-b535-f01d064641b1/2008114162759760.JPG" /></font>
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/91332872.GIF" />。
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/4f399d80.GIF" />。
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/78b3db4b.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/401ee4c5.GIF" />。
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/869f927f.GIF" />。
A:错误
B:正确

.<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/a5e97189.GIF" />
A:错误
B:正确

<font face="Arial">题面见图片<img alt="" src="http://file.open.com.cn/ItemDB/11179/8e26a103-bf65-4138-974f-9cf9c5affe32/200811416255873.JPG" /></font>
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/f08edea9.GIF" />
A:错误
B:正确

<p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/68235292.GIF" /></p><p>。</p><p>&nbsp;</p><p>&nbsp;</p>
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/d53f9673.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/3a04fd0c.GIF" />。
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/f834e892.GIF" />。
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/f4064a46.GIF" />
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/f5bf3a26.GIF" />
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20061013/de12daf9.GIF" />。
A:错误
B:正确

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/acdb2816.GIF" />。
A:错误
B:正确

&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/56c84596.GIF" />。
A:错误
B:正确

<p>题见下图：</p><p>&nbsp;<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/judge/fsteacher9/20060930/c475803b.GIF" /></p>
A:错误
B:正确