家畜(特别是猪)大量食入堆放太久的甜菜,饲喂lh左右后就开始出现症状,患畜呼吸困难,口吐白沫,倒地挣扎,可视黏膜发暗,末梢血液呈酱油色,临床诊断为 ()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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