单选题A device fitted over the discharge opening on a relief valve consisting of one or two woven wire fabrics is called a（）.Aflame stopperBflame screenCflame filterDflame restrictor
单选题
A device fitted over the discharge opening on a relief valve consisting of one or two woven wire fabrics is called a（）.
A
flame stopper
B
flame screen
C
flame filter
D
flame restrictor
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