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【判断题】
丙二醇或聚乙二醇等可加入气雾剂中作潜溶剂,使药物和抛射剂成均相溶液, 制备成溶液型气雾剂。( )A.
正确
B.
错误
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【单选题】From Paragraph 3, it may be concluded that some large companies______.
A.
will gladly join in the fitness program
B.
have realized the need of effective measures
C.
have carried research into the causes of profit losses
D.
have come to see backaches are the greatest cause for the losses
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