齿轮油应改为更频繁地操作车辆或灰尘或龌龊的条件，设备，除非齿轮系统妥善密封，膜型呼吸器装备。
Gear oils should be changed more frequently when operating vehicles or equipment in dusty or dirty conditions unless the gear system is properly sealed and equipped with membrane type breathers.
问46：我可以使用其他经EPA注册的适用于甲型流感的消毒剂清洗我的呼吸器吗？
Q46:Can I use other disinfectants registered by the EPA specifically against influenza A virus to clean my respirator?
问46：我可以使用其他经EPA注册的适用于甲型流感的消毒剂清洗我的呼吸器吗？
Q46:Can I use other disinfectants registered by the EPA specifically against influenza A virus to clean my respirator?
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