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问题 单项选择题

免疫抑制剂治疗流行性出血热应在哪期使用最好（）

A.发热早期

B.低血压休克期

C.少尿期

D.多尿期

E.恢复期

答案

参考答案：A

选择题

—____ you got to know I traveled to USA?

—Through one of your colleagues.

A．Where it was that

B．When was it that

C．How was it that

D．Why was it that
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单项选择题

HACCP又称为（）.

A.危害分析与关键控制点

B.定量分析

C.食品生产的良好规范

D.预防性措施
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