单项选择题

Prevention of avian coccidiosis could be achieved by drug prevention and vaccine immunization.

A.正确
B.错误
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The development of Dermanyssus gallinae belongs to complete metamorphosis.
A.正确
B.错误
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Dermanyssus gallinae can bite farm workers, causing dermatitis and pruritus.
A.正确
B.错误
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