no fewer than two fire extinguishers shall be securely installed in places of good visibility and accessibility at least one fire extinguisher shall be installed on each floor in a building which has more than one floor above the ground
在能见度和可达性良好的地方，应安全安装不少于两个灭火器。在高于地面一层以上的建筑物中，每层应至少安装一个灭火器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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