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多项选择题

为了确诊疾病，应选择下列哪种诊断试验
A、假阳性率低的
B、真阴性率高的
C、敏感性高的 
D、阴性预测值高的
E、假阴性率低的

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相关考题

单项选择题
工程分析中将没有排气筒或高度低于（　　）排气筒的源定位无组织排放源。
A.15m
B.20m
C.25m
D.30m
单项选择题
There are many commonly held beliefs about eye glasses and eyesight that are not proven facts. For instance, some people believe that wearing glasses too soon weakens the eyes. But there is no evidence to show that the structure of eyes is changed by wearing glasses at a young age. Wearing the wrong glasses, however, can prove harmful. Studies show that for adults there is no danger, but children can develop loss of vision if they have glasses inappropriate for their eyes.
We have all heard some of the common myths about how eyesight gets bad. Most people believe that reading in dim light causes poor eyesight, but that is untrue. Too little light makes the eyes work harder, so they do get tired and strained. Eyestrain also results from reading a lot, reading in bed, and watching too much television. However, although eyestrain may cause some pain or headaches, it does not permanently damage eyesight.
Another myth about eyes is that they can be replaced, or transferred from one person to another. There are close to one million nerve fibres that connect the eyeball to the brain, as of yet it is impossible to attach them all in a new person. Only certain parts of the eye can be replaced. But if we keep clearing up the myths and learning more about the eyes, some day a full transplant may be possible.
From this passage one can conclude that ____.（　　）
A.doctorsarestilllearningthingsabouteyesight
B.headachesareonlycausedbyeyestrain
C.everyoneshouldwearglasses
D.peopleonlybelievethingsthatareprovenfacts
不定项选择
速燃期又称为“预混合燃烧”阶段，是指在该阶段内参与燃烧的主要是在着火落后期内形成的均质可燃混合气。
A．正确
B．错误
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