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单选题
确保氧气管是完全清洁的。氧气和滑油或油脂聚在一起会形成爆炸性混合物。爆炸会造成人员伤亡。
A
Ensure the oxygen tubes are completely clear. If oxygen is mixed with oil or compound together, it will form an explosives. Explosion can cause damage to equipment or injury to personnel.
B
Make sure that the oxygen tubes are fully clean. Oxygen and oil or grease make an explosive mixture. An explosion can cause injury or death to personnel.
C
Guarantee the oxygen tubes are completely free of dirts. Oxygen, oil and grease can combine to form an explosive oxides. Explosions can cause casualties.
答案解析
正确答案：B
相关知识点：
氧管要清洁，氧油混合易爆炸伤人
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