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【单选题】
动物胶凝聚硅酸后,应将试液及沉淀
A.
用自来水冷却至室温再过滤
B.
自然冷却至室温再过滤
C.
用冰水冷却后再过滤
D.
趁热过滤
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【单选题】Animal studies are under way, human trial protocols are taking shape and drug makers are on alert. All the international health community needs now is a human vaccine for the bird flu pandemic sweepin...
A.
it has strong side effect to the elderly.
B.
it may turn ineffective in a short period.
C.
it is useless in pring the virus.
D.
it hasn’t been tested in humans.
相关题目：
【单选题】Animal studies are under way, human trial protocols are taking shape and drug makers are on alert. All the international health community needs now is a human vaccine for the bird flu pandemic sweepin...
A.
it has strong side effect to the elderly.
B.
it may turn ineffective in a short period.
C.
it is useless in pring the virus.
D.
it hasn’t been tested in humans.
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