【判断题】
流量太小,容易变成紊流,使空气卷入,也会降低保护效果。
A. 对
B. 错
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答案
B
解析
暂无解析
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【判断题】
钎焊从业人员应承担服从管理,遵章守规的义务;正确佩戴 和使用劳动防护用品的义务;接受安全培训,掌握安全生产技能的义务以及及时报告事故隐患或者其他不安全因素的义务。
A. 对
B. 错
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