1.

By regulation, milk from cows treated with antibiotics usually must be withheld for ____ hours.

A. 48 – 72
B. 30 – 60
C. 48 – 108
D. 72 – 96
Answer» B. 30 ‚Äö√Ñ√∂‚àö√ë‚àö¬® 60


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