鼠疫杆菌的传播媒介是 ["A．鼠蚤","B．蚊","C．蜱","D．鼠虱","E．恙螨"] 如果喝了未经消毒的羊奶，最有可能患的病是 ["A．破伤风","B．肉毒中毒","C．波浪热","D．结核病","E．伤寒"] 常用分离布氏杆菌阳性率最高的标本是 ["A．粪便","B．子宫分泌物","C．羊水","D．骨髓","E．血液"] 关于布鲁菌的生物学性状，不正确的是 ["A．有鞭毛","B．专性需氧","C．不形成芽孢","D．可形成荚膜","E．革兰阴性球杆菌"] 需求表是()。 ["反映需求与价格之间关系的表格","反映需求与收入之间关系的表格","反映需求与供给之间关系的表格","反映需求与替代品之间关系的表格"] 人类最常见的炭疽病是