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单选题
在使用工具/设备前后，使用者应进行目视或功能性检查并确认是否处于可用状态。
A
Prior to and aft use the tool / equipment, the user shall make a visual check or operational test to confirm the utility.
B
Before or after using the tool / equipment, the user shall make a visual check or functional test to confirm the serviceability.
C
Before or aft of using the tool / equipment, the user shall make a spot check or functional test to inform the usability.
答案解析
正确答案：B
相关知识点：
工具设备用前后，检查确认可用性
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