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[单项选择]一项有关吸烟与膀胱癌关系的流行病学研究中i研究者按一定标准选取了110名膀胱癌病人和110名正常对照,对其既往吸烟史进行调查,结果发现髓着每日吸烟剂量的增加,对应的OR值随之增高,经趋势检验有统计学意义,推断该因素可能为该病的病因。
题目中给出的结论用到的逻辑推理法则是
A. 求同法
B. 求异法
C. 共变法
D. 类推法
E. 排除法

热门试题:

[单选题]以下哪项最不符合成釉细胞瘤的X线特征 ( )
A.牙根有不规则吸收
B.早期呈蜂房状后呈多房
C.肿瘤所在的骨皮质膨隆
D.边缘常不整齐,有切迹
E.肿瘤内可见钙化影
[单选题]()原因会导致中心调取不了车站的图像。
A.中心交换机故障
B.中心网管服务器故障
C.车站网管主机故障
D.车站控制室监控终端断电
[单选题]辅警自动离职的,应在离职前()日向用人单位提交书面离职报告。 (1分)
A.7
B.10
C.15
D.30
[单项选择]()是指假定固定资产预计使用寿命已满并处于使用寿命终了时的预期状态,目前从该项资产处置中获得的扣除预计处置费用后的金额。
A. 累计折旧
B. 固定资产
C. 预计净残值
D. 经济价值
[单选题]箱式变电站停电工作前,应断开所有可能送电到箱式变电站的线路的断路器(开关)、隔离开关(刀闸),验电、接地后,方可进行箱式变电站的高压设备工作。
A.正确
B.错误
C.略
D.略
E.略
F.略
[单项选择]工程项目质量管理中,质量控制的主要内容之一是()
A. 确定项目应达到的质量标准
B. 分析和判断影响质量的主次因素
C. 建立质量管理体系
D. 组建项目策划团队
[单选题]依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSG510001-2015)第9. 4. 5. 7 条规定:操作临时变更时,应按实际情况重新填写操作票方可继续进行倒闸操作。
A.正确
B.错误
[填空题]除氧器事故放水门误开,会导致除氧器水位()。
[单项选择]贝类毒素中毒性最高,危害最大,中毒严重者可以致死的是。()
A. 麻痹性贝类毒素
B. 腹泻性贝类毒素
C. 神经性贝类毒素
D. 肠毒性贝类毒素
[单项选择]用兆欧表测量时,表身由水平位置向任一方向的倾斜应小于()
A. 5°
B. 10°
C. 15°
D. 20°
[判断题]根据《附件17》有关规定,有关人员和车辆必须在指定的检查点查验身份后,始得准许进入空侧区域和保安限制区。
A.正确
B.错误
[判断题]禁止在只经断路器(开关)断开电源或只经换流器闭锁隔离电源的设备上工作。
A.正确
B.错误
[多选题]《铁路客运运价规则》(铁运〔1997〕102号)规定,()、“以外”、“以前”、“以后”——均包括本数。
A.“以上”
B.“以下”
C.“以内”
D.“大于”
[单选题]以下选项中(____)组成信号电源系统。
A.电源屏
B.UPS
C.蓄电池
D.以上都包括
[多项选择]全站仪可以同时进行()测量和数据处理。
A. 角度
B. 数据处理
C. 坐标
D. 距离
[单项选择]Questions 62 to 66 are based on the following passage.
My father’s reaction to the bank building at 43rd Street and Fifth Avenue in New York City was immediate and definite. “You won’t catch me putting my money in there!” he declared, “Not in that glass box!”
Of course, my father is a gentleman of the old school, a member of the generation to whom a good deal of modern architecture is upsetting, but I am convinced that his negative response was not so much to the architecture as to a violation of his concept of the nature of money.
In his generation money was thought of as a real commodity (实物) that could be carried, or stolen. Consequently, to attract the custom of a sensible man, a bank had to have heavy walls, barred windows, and bronze doors, to affirm the fact, however untrue, that money would be safe inside. If a building’s design made it appear impenetrable, the institution was necessarily reliable, and the meaning of the heavy wall as an ar
A. The former thinks more of money than the latter.
B. The younger generation values money more than the older generation.
C. Both generations rely on the imaginative power of bankers to make money.
D. To the former money is a real commodity but to the latter the means of producing more money.
[单项选择]根据我国《环境保护法》的规定,下列关于环境污染危害的民事法律责任及环境民事纠纷的解决的叙述,错误的是哪项( )。
A. 造成环境污染危害的,有责任排除危害,并对直接受到损害的单位或个人赔偿损失
B. 赔偿责任和赔偿金额的纠纷,可以根据当事人的请求,由环保行政主管部门或其他依法行使环境监督管理权的部门处理
C. 当事人对环保部门处理决定不服的,可以向人民法院起诉
D. 未经环保部门处理,当事人不能直接向人民法院起诉
[单选题]现场发现违章行为,()应立即组织进行整改,合格后方可继续工作。
A.专责监护人
B.巡检人员
C.工作负责人
D.工作人员
E./
F./
[单项选择]患者,女性,33岁,因左侧上下后牙有自发性疼痛放散至头面部两天来诊。检查:左上第一磨牙牙体未见明显异常,疼痛与温度测试无关,牙髓活力测验表现为迟钝,X线片示髓腔内有阻射的钙化物,对该牙进行局部麻醉可缓解疼痛,该牙最可能的诊断为()
A. 三叉神经痛
B. 牙髓钙化
C. 牙髓坏死
D. 残髓炎
E. 上颌窦炎
[判断题]严禁将手置于踏面和闸瓦之间
A.正确
B.错误
[填空题]IT实际的三个层次包括( )、( )、( )。
[单项选择]在手术中定位泪囊的标志是()。
A. 外眦韧带
B. 内眦韧带
C. 弓状扩张部
D. 外下孔
E. 上孔
[单项选择]Why did the author begin to doubt himself after the first year of his writing career
[单项选择]
The Ideal Husband

Science now might be able to explain women’s fascination with Brad Pitt’s face and George Clooney’s eyes. Women seem to (51) potential mate by how masculine their features are, new research shows. Men with square jaws and well-defined brow ridges are seen as good short-term partners, (52) those with more feminine traits such as a rounder face and fuller lips are perceived as better long-term mates.
In the study by Daniel Kruger at the US’s University of Michigan, 854 subjects viewed a series of (53) head shots that had been digitally changed to exaggerate or minimize masculine traits. They then (54) questions about how they expected the men in the photos to behave.
Most participants said that those with more masculine features were (55) to be risky, competitive, and more apt to fight, challenge bosses, cheat on spouses and put less ef
A. normal
B. ordinary
C. weak
D. strong

[填空题]当事人对职业病诊断有异议时,可以向作出()地方人民政府卫生行政部门申请鉴定。
[单项选择]

Although there are obviously cultural (45) for the differences in emotions and behavior, (46) breakthrough research reveals that the (47) of many puzzling differences between men and women may (48) in the head. Men’s and women’s brains (49) much in common, but they are definitely not the same (50) size, structure or insight. Broadly speaking, a woman’s brain, like her body, is ten to fifteen percent smaller than a man’s, (51) the regions dedicated to language may be more densely (52) with brain cells.
Girls generally speak earlier and read faster. The reason may be (53) females use both sides of the brain when they read. In (54) , males rely only on the left side.At every age, women’s memories (55) men’s. They have a greater ability to (56) names with faces than men do, and they are (57) at recalling list. The events peopl
A. which 
B. who 
C. that 
D. why

[单选题]整铸辙叉护轨平直部分轮缘槽标准宽度为( )。
A.42 mm
B.43 mm
C.44mm
D.45 mm
[判断题]《商业银行股权管理暂行办法》规定,同一投资人及其关联方、一致行动人入股商业银行应当遵守银监会规定的持股比例要求。
A.正确
B.错误
[单项选择]
{{B}}TEXT A{{/B}}

There is a window in the office where I work that overlooks the playground next door. Seated at my desk, I can look out this window and am rewarded with a most delightful view. Several times during the day, the students at the elementary school are released to the always ready play are A. Children of many colors and sizes romp around the grounds, whooping and hollering and carrying on as children do. I see swings flying in the air, teeter totters balancing precariously on end, big robber balls earning new bruises on the blacktop. In the foreground are picnic benches under an aging oak tree, where little girls come to share secrets and little boys sneak up from behind to steal them away.
As I sit at my desk and observe the frenzied play of these children who are working so hard at being children, I
A. imaginative
B. sentimental
C. warm-hearted
D. hypocritical
[多项选择]Winxp安装的方式有()
A. 无人值守安装
B. 光盘安装
C. 网络安装
D. 硬盘安装
[多选题]脊髓损伤病人康复的主要内容有: ( )
A.致残肢体及所有关节每日至少2次大范围活动
B.卧位锻炼
C.坐位锻炼
D.立位锻炼
E.行走锻炼
[判断题]高处作业时因触电失足坠落应定为触电事故不能按高处坠落划分。
A.正确
B.错误
[多项选择]积极发展农户贷款业务,制定农户贷款发展战略,积极创新产品,建立专门的风险管理与考核激励机制,加大营销力度,不断扩大授信覆盖面,提高农户贷款的()。
A. 可靠性
B. 可得性
C. 便利性
D. 安全性
[单项选择]男性,43岁。长夏时节,起居不慎而外感症见:身热,微恶风,汗少,肢体酸重,头昏重胀而痛,心烦口渴,胸闷恶心,小便短赤,舌苔薄黄腻,脉濡数。如患者症见胸闷,口中粘腻加重、口渴,渴不多饮,胸闷犯恶,舌苔黄厚腻加重,可加()
A. 黄连
B. 苍术、白豆蔻
C. 赤苓、猪苓
D. 银花、连翘
E. 藿香、佩兰
[判断题]阀型避雷器上部的均压环使避雷器电压分布均匀。( )
A.正确
B.错误
[单项选择]关于明胶使用特点的叙述,错误的是()
A. 能提高乳剂的感光度
B. 是一种保护性胶体
C. 参与坚膜作用
D. 是一种吸卤剂
E. 黏性较差
[单选题]生产经营单位的主要负责人对本单位的( )工作全面负责。
A.运输生产
B.经营生产
C.安全生产
D.责任生产
[单项选择]有以下程序: #include struct STU {char name[10]; int num; }; void f(char *name, int num) { struct STU s[2]={{"SunDan",20044},{"Penghua",20045}}; num=s[0].num; strcpy(name,s[0].name); } main( ) { struct STU s[2]={{"YangSan",20041},{"LiSiGao",20042}},*p; p=&s[1]; f(p->name,p->num); printf("%s %d/n",p->name,p->num); } 程序运行后的输出结果是______。
A. SunDan 20042
B. SunDan 20044
C. LiSiGuo 20042
D. YangSan 20041

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