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【单选题】
假定两种方法检测结果的假阳性率和假阴性率都很低。现有 50 份血样用甲法检查阳性 25 份,用检查阳性 35 份,其中两法同为阳性和阴性的分别为 23 和 13 份。为检验两种方法检查结果之间的差别是否有显著性意义,用( )A.
配对t检验
B.
2×3表卡方检验
C.
配对卡方检验
D.
u检验
E.
四格表卡方检验
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【简答题】From good reading we．can get pleasure, companionship, experience, and instruction．A good book may absorb our attention so completely that for the time being we forget our surroundings and even our ide...
【判断题】The two types of causal relations are explicit and direct causal relations.
A.
正确
B.
错误
【单选题】此次新型冠状病毒感染的肺炎约半数患者在()后会出现呼吸困难,严重者可快速进展为急性呼吸窘迫综合征、脓毒症休克、难以纠正的代谢性酸中毒和出凝血功能障碍等严重症状
A.
1天
B.
3天
C.
一周
D.
10天
【简答题】A good book can give us (emotion) ____ satisfaction.
【单选题】此次新型冠状病毒感染的肺炎约半数患者在()后会出现呼吸困难,严重者可快速进展为急性呼吸窘迫综合征、脓毒症休克、难以纠正的代谢性酸中毒和出凝血功能障碍等严重症状
A.
10天
B.
3天
C.
1周
D.
1天
【简答题】From good reading we can get pleasure, companionship, experience, and instruction．A good book may absorb our attention so completely that for the time being we forget our surroundings and even our ide...
【简答题】From good reading we can derive pleasure, companionship, experience, and instruction. A good book may absorb our attention so completely that for the time being we forget our surroundings and even our...
【单选题】This passage mainly discusses ______.
A.
causal reasoning
B.
various types of reasoning
C.
classification of causes
D.
the causal process
【单选题】For the input-output relationship , determine whether the corresponding system is causal and stable.
A.
uncausal,unstable
B.
uncausal,stable
C.
causal,unstable
D.
causal,stable
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