题目成年牛得口蹄疫的死亡率是()A. 10%~15%B. >40%C. 20%~25%D. 0%~2%E. 30%~35%成年牛得口蹄疫的死亡率是()A. 10%~15%B. >40%C. 20%~25%D. 0%~2%E. 30%~35%题目解答答案D. 0%~2%