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【单选题】
关于手提式灭火器的说法，错误的是()。
A.
灭火器是扑救初起火灾最基本和十分有效的消防应急设备
B.
灭火器是指能在外界压力的作用下，将其内部所充装的灭火剂喷射出来，并由人力移动的灭火器具
C.
灭火器结构简单，操作灵活，使用方便，稍作培训即可掌握其使用方法
D.
在有火灾危险的场所配置适量的灭火器是十分重要和必要的
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