题目内容

对病因假设的研究是

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— There were already people in the car, but they managed to take me as well— It______ a comfortable journey.

A. can't be
B. shouldn't be
C. couldn't have been
D. mustn't have been

最有助于诊断的检查是

A. 咽拭培养
B. 痰培养
C. 白细胞检查
D. 皮疹涂片检查
E. 局部脓液培养

司可巴比妥的鉴别可使用

系统聚类分析法中，距离d可以取()。