【单选题】【消耗次数:1】
黄瓜的发芽室温为( )
A10-15
B15-20
C20-25
D25-30
参考答案:
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【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
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【单选题】 已知点A(20,20,10),点B(20,25,30),则( )产生重影点。
①  在H面
②  在V面
③  在W面
④  不会
【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______。
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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。
①  交换排序法
②  选择排序法
③  插入排序
④  选择排序
【单选题】 <img src=https://huaweicloudobs.ahjxjy.cn/30D042F5C5CA20B112953E89D9ECCF60.png title=15.png alt=15.png/>
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②  <img src=https://huaweicloudobs.ahjxjy.cn/028F192CC9D2AD01452B4D3F4D921B9E.png title=15-2.png alt=15-2.png/>
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【单选题】 输入10,该程序的运行效果是() #include void main() { int a=15,b=25; intp= intq= q=p; printf(%d ,%d\n,*p,*q); }
①  15,15
②  15,25
③  25,15
④  25,25
【单选题】 A点坐标为(10、20、30),B点坐标为(30、20、30)则AB距离为______。
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【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______。
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【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/>
随机题目
【单选题】 某市居民肺癌年死亡率为0.5‰,其中吸烟者肺癌年死亡率为0.9‰,非吸烟者肺癌年死亡率为0.08‰,则该市居民肺癌死亡中归因于吸烟的比例:
①  0.42‰
②  ?91%
③  ?80%
④  0.84
【单选题】 在病例对照研究中,比值比(OR)的含义是指:
①  病例组的发病率与对照组的发病率之比
②  病例组的发病率与对照组的发病率之差
③  病例组的暴露比值与对照组的暴露比值的比
④  病例组的暴露比值与对照组的暴露比值之差
【多选题】 可用来描述暴露与疾病关联强度的指标是:
①  标化死亡比
②  归因危险度
③  相对危险度
④  发病率比
⑤  发病密度
【多选题】 影响患病率降低的因素包括:
①  发病率下降
②  病死率增高
③  病例迁出
④  治愈率提高
⑤  健康者迁入
【多选题】 影响患病率升高的因素包括:
①  发病率下降
②  报告率提高
③  诊断水平提高
④  治愈率提高
⑤  未治愈者的寿命延长
【多选题】 以下关于累积发病率描述正确的是:
①  分子为该人群在随访期内的全部新病例
②  分母是随访的起始人数,是具有发病风险的人口
③  适用于观察人口不稳定,失访比例高的情况
④  用于估计个体在一定时期内发生某种疾病的条件概率
⑤  报告时必须说明是多长时间
【判断题】 病例对照研究可以计算RR值。
①  正确
②  错误
【判断题】 队列研究中既可以计算RR值又可以计算OR值
①  正确
②  错误
【判断题】 人群归因危险度指暴露组发病(死亡)率减去非暴露组发病(死亡)率
①  正确
②  错误
【判断题】 归因危险度百分比为暴露者中暴露所致的发病(死亡)率占暴露者发病(死亡)率的百分比
①  正确
②  错误