【单选题】【消耗次数：1】
为避免学生过于斜视而影响视力，水平视角及前排边座与黑板远端的视线夹角应大于等于（ ）度。
①
10
②
15
③
20
④
30
参考答案：
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相关题目
【单选题】
直线的起点为（10、10），如果要画出与 X 轴正方向成 60 度夹角，长度为 100 的直线段 应输入（）。
①
@100 60
②
@100，60
③
100 60
④
50，86.6
【单选题】
已知四点A（10、20、30）、B（30、20、10）、C（10、20、10）、D（20、20、30），则对H面的重影点为______。
①
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
A与D，D点可见
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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B与C，B点可见
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
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mso-fareast-font-family:等线;
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A与C，A点可见
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
A与C，C点可见
【单选题】
已知三点A（10、20、15）、B（10、0、30）、C（0、10、0），则在坐标面上的点为______。
①
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;
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mso-fareast-font-family:等线;
mso-fareast-theme-font:minor-fareast;
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A、B、C三点
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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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;
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B点
③
Normal
0
7.8 磅
0
2
false
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false
EN-US
ZH-CN
X-NONE
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B、C两点
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;
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mso-ascii-font-family:等线;
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C点
【单选题】
A点坐标为（10、20、30），B点坐标为（30、20、30）则AB距离为______。
①
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;
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mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
正垂线
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
/* Style Definitions */
table.MsoNormalTable
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mso-fareast-theme-font:minor-fareast;
mso-hansi-font-family:等线;
mso-hansi-theme-font:minor-latin;
mso-font-kerning:1.0pt;}
侧垂线
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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正平线
④
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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mso-bidi-font-size:11.0pt;
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铅垂线
随机题目
【判断题】
有了智慧养老这些手段，老年人的信息掌握在社区的服务平台上，如果老人一旦遇到了危险，由智慧养老的平台及时地做出响应，更多的责任转移到了政府、社会和社区来了，老人的子女就不用承担主要的责任了。
①
正确
②
错误
【判断题】
智慧社区的概念强调的是一种新型的治理形态，即在社区的服务管理过程中是不同于以往的，是用新的技术手段，使这些服务的供给和需求能够更加分散、各自分配的一种方式。
①
正确
②
错误
【单选题】
加强对贯彻落实《关于新形势下党内政治生活的若干准则》情况的监督，要加强会前、会中、会后的全程监督，强化（）政治体检，发展积极健康政治文化。
①
具体化
②
规范性
③
常态化
④
经常性