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【单选题】
用某种排序方法对线性表(25,87,21,47,15,27,63,35,20)进行排序时,元素序列的变化情况如下:(1)25,87,21,47,15,27,63,35,20(2)20,15,21,25,47,27,63,35,87(3)15,20,21,25,35,27,47,63,87(4)15,20,21,25,27,35,47,63,87则采用的排序方法是___________排序长度为4。
【单选题】
已知点A(20,20,10),点B(20,25,30),则( )产生重影点。
【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
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7.8 磅
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2
false
false
false
EN-US
ZH-CN
X-NONE
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A与C,A点可见
④
Normal
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7.8 磅
0
2
false
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EN-US
ZH-CN
X-NONE
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A与C,C点可见
【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
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7.8 磅
0
2
false
false
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EN-US
ZH-CN
X-NONE
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正垂线
②
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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font-family:等线;
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侧垂线
③
Normal
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false
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ZH-CN
X-NONE
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正平线
④
Normal
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7.8 磅
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2
false
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false
EN-US
ZH-CN
X-NONE
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铅垂线
【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
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7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
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A、B、C三点
②
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ZH-CN
X-NONE
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B点
③
Normal
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false
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B、C两点
④
Normal
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7.8 磅
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false
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ZH-CN
X-NONE
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C点
【单选题】
一组数据19,16,22,25,35,20,32,24的中位数是( ).
【单选题】
一组记录的关键字序列为(25,50,15,35,80,85,20,40,36,70),其中含有5个长度为2的有序表,按归并排序的方法对该序列进行一趟归并后的结果为( )。
①
A .(15,25,35,50,80,20,85,45,70,36)
②
B.(15,25,35,50,20,40,80,85,36,70)
③
C.(15,25,50,35,80,85,20,36,40,70)
④
D.(15,25,35,50,80,20,36,40,70,85)
【单选题】
已知点A(20,20,10),点B(20,20,30),则( )产生重影点。
【单选题】
50、( )布置方式中各分层平巷是按25°~35°角呈斜坡式布置,一般适用于倾角小于15°~20°的煤层。
【单选题】
( )执行首诊负责制,依法依规及时报告法定传染病,负责传染病信息报告管理要求的落实
【单选题】
研究乙型肝炎病毒的宜选用的实验动物种类是( )
【单选题】
不符合实验室良好工作行为规范的是( )
【单选题】
医疗机构确立或指定具体部门和专(兼)职人员负责传染病信息报告管理工作,二级及以上医疗机构必须配备( )或以上专(兼)职人员
【单选题】
按照突发事件类型,预案可分为( )、事故灾害类应急预案、公共卫生事件类应急预案和社会安全事件类应急预案
【单选题】
所有感染性材料必须在实验室内清除污染,( )是清除污染时的首选方法
【单选题】
自然灾害不同分期的卫生应急工作重点不同。灾害冲击期的应急任务侧重于( )