单选题
发布日期:2021-03-22
fight an electrical fire
fight a magnesium fire
eliminate smoke from a compartment
All of the above
标签: water fog allpurpose nozzle
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The all-purpose nozzle will produce a fog spray when you().
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The straight stream capability of an all-purpose nozzle is used in fighting a cl...
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What are the most important reasons for using water fog to fight fires?()
The spray of water in low-velocity fog will have().
Which kind of fog is also named as ground fog?()