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[单选题]
千级手术间手术区沉降法细菌最大平均浓度为()
A.0.75个/30min.¢90皿
B.1.5个/30min.¢90皿
C.0.2个/30min.¢90皿
D.0.4个/30min.¢90皿
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A.0.75个/30min.¢90皿
B.1.5个/30min.¢90皿
C.0.2个/30min.¢90皿
D.0.4个/30min.¢90皿
第1题
A.≤0.75个/15min•φ90皿
B.≤0.75个/30min•φ90皿
C.≤1.5个/15min•φ90皿
D.≤1.5个/30min•φ90皿
第2题
A.≤0.2个/15min•φ90皿
B.≤0.2个/30min•φ90皿
C.≤0.4个/15min•φ90皿
D.≤0.4个/30min•φ90皿
第5题
A.4cfu/(5min·直径9cm平皿)
B.4cfu/(10min·直径9cm平皿)
C.4cfu/(15min·直径9cm平皿)
D.4cfu/(30min·直径9cm平皿)
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