患者,男性,40岁,支气管哮喘史22年,近来反复发作性的喘息、气急、胸闷或咳嗽等症状。在应用氨茶碱治疗中不正确的是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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