题目内容

麻疹减毒活疫苗是经培养、收获病毒液,加入适宜____后冻干制成的生物制品。

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In the statement, "Volvo develops its cars for buyers to whom safety is a major concern, positioning the vehicles as the safest a customer can buy," buyers to whom safety is a major concern is the target market.

A. 对
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在收获麻疹病毒原液时,必须破碎细胞使病毒释放出来。

A. 对
B. 错