【单选题】
已知A、B、C三点坐标分别为（10、20、30）（20、40、60）、（30、60、90），则A、B、C三点______。
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
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mso-style-priority:99;
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表示一个平面
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
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mso-para-margin:0cm;
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mso-fareast-font-family:等线;
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mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
不能表示一个平面
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
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mso-bidi-font-size:11.0pt;
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mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
表示一个特殊位置平面
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
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mso-style-priority:99;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.5pt;
mso-bidi-font-size:11.0pt;
font-family:等线;
mso-ascii-font-family:等线;
mso-ascii-theme-font:minor-latin;
mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
无法判断
【单选题】
某地区城市居民和农村居民人均年收入分别为21000元和17000元，标准差分别为186元和165元，则居民人均年收入的差异（）
①
城市大
②
农村大
③
城市和农村一样
④
二者不能比较
【单选题】
8086/8088指令OUT??80H，AL表示( )?
①
将80H送给AL
②
将80H端口的内容送给AL
③
将AL的内容送给80H端口
④
将AL内容送给80H内存单元
【单选题】
某项目需购买X、Y两种设备，基期购买量分别为10台、15台，单价分别为10万元和20万元，报告期购买量分别为12台和14台，单价分别为15万元和22万元，该项目设备价格指数为（ ）
①
100%
②
120%
③
102%
④
122%
【单选题】
8086中8位算术运算指令执行后，结果为10010001B，则ZF和SF标志位的值为（）
①
ZF=0SF=1
②
ZF=0SF=0
③
ZF=1SF=1
④
ZF=0SF不确定
【单选题】
一台工作于温度分别为327℃和27℃的高温热源与低温源之间的卡诺热机，每经历一个循环吸热2000J，则对外作功（）
①
2000J
②
1000J
③
4000J
④
500J
【单选题】
已知各期环比增长速度分别为2%、5%、8%以及7%，则相应的定基增长速度的计算方法为( )。
①
(102%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>105%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>108%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>107%)-100%
②
102%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>105%x108%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>107%
③
2%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>5%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>8%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>7%
④
(2%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>5%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>8%<img width="10" height="17" src="/jxpt-web/static/3rdlib/UEditor/themes/default/images/spacer.gif"/>7%)-100%