从育肥场源头抓起，坚决淘汰野毒感染阳性带毒猪和多次免疫抗体不合格猪，切断猪瘟流行的恶性循环。
查看答案
疫病净化完毕后猪场不采取任何措施，也不会再次感染该疫病。
A. 对
B. 错
Pathological anemia can caused by ( )
A. Polycythemia vera
B. Nutritional deficiency
Congenital heart disease
D. Pulmonary disease
Which one is right for IDA?( )
A. MCV↓ MCH↓ MCHC↓
B. MCV↓ MCH↓ MCHC normal
C. MCV↑ MCH↑ MCHC normal
D. MCV↑MCH↑ MCHC↑
About RDW, Which description is not right? ( )
A. It measures the variability of RBC volume
B. RDW is elevated in most anemia
C. It measures the mean volume of RBC
D. RDW normal range is less than 15%
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