单项选择题
A.100mB.200mC.300mD.500m
A.0.5%B.1%C.2%D.5%
A.4-8hB.8-12hC.12-24hD.24-48h
A.脑灰质软化、脑膜充血水肿B.血液和肌肉呈樱桃红色、苦杏仁味C.黏膜发绀、血液紫黑不凝固D.胴体蚀斑和有大蒜味
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