A.4~8 B.10~20 C.20~30 D.30~40
A.1~3 B.3~5 C.4~8 D.8~10
A.15~30s B.5~10s C.40~50s D.50~60s
A.瘤胃蠕动次数增加 B.瘤胃蠕动强度增大 C.瘤胃持续时间延长 D.瘤胃蠕动消失