患者女性,77岁。慢性支气管炎15年。常在冬春寒冷季节发作咳嗽、咳痰。护士指导该女士呼吸和排痰时的错误措施是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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