()是豆类饲料存在的最主要的抗营养因子,它直接影响饲料蛋白质的消化。
以下输血反应中较为严重的是() ["发热反应","过敏反应","溶血反应","疼痛反应","皮疹反应"]
补充加注液压油前需()。 ["A、清洗液压油油箱","B、清洗回油过滤器","C、清洗液压油泵","D、清洗加油过滤装置"]
后张孔道压浆水泥浆的泌水率最大不得超过() ["1%","2%","3%"]
配合性试验通常包括() ["受血者血清对供血者红细胞","受血者红细胞对供血者血清","受血者血清对受血者红细胞","A+B","B+C"]
影响微生物蛋白合成的因素?