更多“关于异型性的叙述，下列哪些是正确的”相关的问题
同一双变量资料，进行线性相关与回归分析，有（）。
A.r>0，b<0
B.r<0，b>0
C.r>0，b>0
D.r与b的符号毫无关系
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On television all over the world there are programmes about the work of the police. They are popular because they are usually very exciting. In London there is a television programme called "Police Five" --because it is on for five minutes once a week. A television reporter, Shaw Taylor, talks about crimes in the London area. He asks for public help. The police station needs the help of ordinary people because sometimes you or I have information that can be useful to the police. Shaw Taylor shows pictures of paintings, jewellery (珠宝) and other things which thieves stole during the week. Sometimes he shows the car that the thieves escaped in. When people see men or things on the television programme which they may remember, they can tell the police where they saw them. With their help the police may catch more criminals. Sometimes the police find a car or some money. Shaw Taylor shows them on television. The owners sometimes see them. Then they can telephone the police and say, "Thank you very much -- that’s mine!"
On television all over the world there are programmes about the work of the police. They are popular because they are usually very exciting. In London there is a television programme called "Police Five" --because it is on for five minutes once a week. A television reporter, Shaw Taylor, talks about crimes in the London area. He asks for public help. The police station needs the help of ordinary people because sometimes you or I have information that can be useful to the police.
Shaw Taylor shows pictures of paintings, jewellery (珠宝) and other things which thieves stole during the week. Sometimes he shows the car that the thieves escaped in. When people see men or things on the television programme which they may remember, they can tell the police where they saw them. With their help the police may catch more criminals.
Sometimes the police find a car or some money. Shaw Taylor shows them on television. The owners sometimes see them. Then they can telephone the police and say, "Thank you very much -- that’s mine!"
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直流稳压电源通常由电源变压器、整流电路、滤波电路和稳压电路组成，其中滤波电路的作用是将脉动的直流电压中含有的（）滤除。
A. 直流电压B. 负载变动成分C. 平滑成分D. 纹波成分
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键盘按功能可分为4个大区，下图用方框标示的①处是(1)区，②处是(2)区。
A.编辑控制键
B.输入
C.数字键
D.功能键
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“科学探究的内容标准框图”不包括（）。
A.提出问题
B.制定计划
C.表达与交流
D.大胆想象
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葡萄球菌A蛋白可以下列何检与免疫球蛋白Fc段非特性检异合
A、lgA
B、lgG
C、lgM
D、lgE
E、lgD
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患者男性，52岁，3周前发现右下后牙龈有小包，有时口腔内觉有咸水。无其他不适，曾在外院摄X线片。查见右下第一前磨牙咬合面龋洞深，探无感觉，叩痛异常感，右下第一磨牙近中根尖部龈瘘，叩痛（－），牙髓活力正常。X线片见右下第一前磨牙根尖X投射区不规则，边界模糊。右下第三磨牙前倾阻生，余未见异常治疗设计应为（）。
A . A.牙周治疗
B . 干髓治疗
C . 根管治疗
D . 塑化治疗
E . 患牙拔除
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铁路槽车定量装车远程上位机只可监控静电接地线工作状态，不能监控防溢开关工作状态。（)
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社团贷款发放时，代理社与参与社应在（）完成各自承担的贷款份额的放款处理。
A.同一天
B.2日内
C.3日内
D.5日内
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()应当建立和完善党委新闻发言人制度，逐步建立例行发布制度，及时准确发布重要党务信息。
A.党的中央纪律检查机关
8.党中央有关工作机关
C县级以上地方党或以及地方纪律检查机关
D.地方党委有关工作机关
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女，39岁，患风湿性心脏病二尖瓣狭窄，突然出现偏瘫，失语。检查：神志清楚，脑脊液正常，心电图提示心房颤动，最可能的诊断是（）
A．脑出血
B．脑栓塞
C．脑血栓形成
D．蛛网膜下腔出血
E．短暂性脑缺血发作
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如上图所示基本共射放大电路中,消除饱和失真的方法为 _____ (2.0分)
A. 减小 V BB B. 减小 V CC C. 减小 R B D. 减小 R C
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输出剖视图前必须在（）状态下绘制出剖切线或者剖切环。
A.草图
B.编辑
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