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判断题队列研究根据研究对象是否暴露于某研究因素或其不同水平将研究对象分成暴露组与非暴露组

A. 正确

B. 错误

学科：默认课程

时间：2026-03-30 21:13:11

相关题目
相关作业

下列哪项不属于队列研究的特点

A. 设立对照组B. 属于观察法C. 能确证暴露和结局之间的因果关系D. 随机分组

下列哪项不属于队列研究的目的

A. 检验病因假设B. 评价预防效果C. 新药的上市后监测D. 描述疾病的分布

暴露指研究对象接触过某种待研究的物质或具有某种研究的特征或行为

A. 正确B. 错误

队列是指有共同经历或有共同暴露特征的一组人群(如出生队列和暴露队列).根据其变化分为固定队列和动态队列

A. 正确B. 错误

队列研究根据研究对象是否暴露于某研究因素或其不同水平将研究对象分成暴露组与非暴露组

A. 正确B. 错误

<img src="https://tihai-oss-cloud.itihey.com/img/b4e8fca7d72dce4e386f32692b4a90f0.png"><img src="https://tihai-oss-cloud.itihey.com/img/3c5d0093538571ae84efa95e7e66b473.png"><img src="https://tihai-oss-cloud.itihey.com/img/88edadac3d610b6d34543c2e3bcedcf2.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/8e16fc1eaeb76783e8e5deba2430d53a.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/658eb05f326e018ffd991285429a57b1.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/bb83e705608b922b266587bfca9ee3fa.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/b2bb1cc42c44d497b5d6932687c0f6b8.png">

<img src="https://tihai-oss-cloud.itihey.com/img/99db01a3a7465e179369dfb02cb3893d.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/3e0bea2e8e5801148b603f8b5a1d0cf4.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/601cf2d7af23686eee8a40bc0686ecfb.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/53000d39dade51957da09fc3f545a384.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/928cbaf817c86aa59994a75703358bef.png">

<img src="https://tihai-oss-cloud.itihey.com/img/6f2e06756bca8391110280ac7b68d166.png"><img src="https://tihai-oss-cloud.itihey.com/img/95af7a60001d8f0f823b31794680771b.png"><img src="https://tihai-oss-cloud.itihey.com/img/11ea3b1c5d864e9f1b8ccf19224d5dee.png">

A. <img src="https://tihai-oss-cloud.itihey.com/img/74caf297eca2d774e7625698b51c1a88.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/ba5a4647ab5d30921e58fdbdf75b927e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8ee5aa7478a2b4eab2f1d7439bd947ac.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/35116b2792326fd98abf66c1899c04cd.png">

六阶行列式中带负号的项是

A. <img src="https://tihai-oss-cloud.itihey.com/img/a77f8f6f8349801005acd2bef690756e.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/4fa156fb2a90f7ec47b9afbdfceb0632.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/b5fa13481d14b1507d172612c2d5d914.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/190cd0f06f560600f752eb8652b3b0c4.png">

下列哪个行列式的值一定为零 ( )

A. <img src="https://tihai-oss-cloud.itihey.com/img/916e250e392e5dc4acd3aab628616df2.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/087edd11f309e19873c4cd252597f0d6.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/8dcfad38bf364ec658034d57357d1fcd.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/9e7188b0eac71cf91f25a33d1995bd00.png">

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