单项选择题
A.选取5包采样 B.选取5~10包采样 C.选取2包采样 D.逐包采样
A.选取10包采样 B.选取5~10包采样 C.选取2包采样 D.逐包采样
A.0.24~0.25mg/kg B.0.14~0.15mg/kg C.0.34~0.35mg/kg D.0.04~0.05mg/kg
A.0.2~0.6mg/kg B.1.1~1.5mg/kg C.0.01~0.02mg/kg D.0.1~0.2mg/kg
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