单项选择题
A.污区生物安全员B.净区生物安全员C.保管D.污区净区生物安全员均可操作
A.预冷2-8°C;5minB.常温10~15°C;30minC.预冷0°C;5minD.常温20~25°C;30min
A.1:200;10minB.1:200;30minC.1:400;30minD.1:800;30min
A.60°C;30minB.65℃;30minC.65℃;60minD.70°C;30min
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