【单选题】【消耗次数：1】
皮肤占体重的（）%
①
A 10
②
B 15
③
C 20
④
D 50
参考答案：
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相关题目
【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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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;}
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 */
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-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;}
A与C，A点可见
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-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;}
A与C，C点可见
【单选题】
设a=5，b=6，c=7，d=8，则执行下列语句后，x的值为：______。
x= IIF((a>b) And (c<d),10,20)
①
300
②
20
③
30
④
10
【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-para-margin:0cm;
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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;}
A、B、C三点
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-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;}
B点
③
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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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;}
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-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
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mso-bidi-font-size:11.0pt;
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mso-ascii-font-family:等线;
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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;
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C点
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/C63E9B1544D2B15F47F6F2D3B2BF9599.png title=20.png alt=20.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/5698808D5AEFFA350FBAB77886B8D88A.png title=20-1.png alt=20-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/D079071E686E1FF3B5AE9CE8A0C9160F.png title=20-2.png alt=20-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/5B0A52BAA01782671B7DE4FA22A354A2.png title=20-3.png alt=20-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/D234131CFCC01ACED9FF6C52CDE08B9E.png title=20-4.png alt=20-4.png/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/30D042F5C5CA20B112953E89D9ECCF60.png title=15.png alt=15.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/79C4B02007A45890BAC544E02B69BB5E.png title=15-1.png alt=15-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/028F192CC9D2AD01452B4D3F4D921B9E.png title=15-2.png alt=15-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/A5D6BA6CE2C3B6379086689A7627120E.png title=15-3.png alt=15-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/65AE7C5AC78CF7ABB33F7DD01861D3EE.png title=15-4.png alt=15-4.png/>
【单选题】
设一个关系模式为R(A,B,C),对应的关系内容为R={{1,10,50},{2,10,60},{3,20,72}{4,30,60}},则δB>15(R)的运算结果中具有的元组个数为（ ）。
①
1
②
2
③
3
④
4
【单选题】
设一个关系模式为R(A,B,C)，对应的关系内容为R={{1,10,50}, {2,10,60}, {3,20,72}, {4,30,60}}，则δB15(R)的运算结果中具有的元组个数为（ ）。
①
1
②
2
③
3
④
4
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/D10F3867F009C12A86EBD777CEC078D4.png title=15-C.png alt=15-C.png/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/4176636211EB8A044CF21B7AB56291AB.png title=15-1.png alt=15-1.png/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/B261A185F9598EA9E60653C64E74BD8A.png title=15-2.png alt=15-2.png/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/630884F0C5857EE5E21C0E16FD073D0F.png title=15-3.png alt=15-3.png/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/295270C3F6D8A5A45C40C103E82F09BD.png title=15-4.png alt=15-4.png/>
【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
/* Style Definitions */
table.MsoNormalTable
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mso-tstyle-rowband-size:0;
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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;}
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;
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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;}
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;
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mso-style-parent:"";
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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;}
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;
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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;
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mso-hansi-theme-font:minor-latin;
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无法判断
随机题目
【单选题】
最大运行方式的定义是（）。
①
通过保护装置的短路电流为最小的运行方式
②
通过短路点的短路电流为最小的运行方式
③
通过短路点的短路电流为最大的运行方式
④
通过保护装置的短路电流为最大的运行方式