单选题The 12-foot low-velocity fog applicator（）.Ahas a spray pattern 12 feet in diameterBcan be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzlesChas a 90°bend at its discharge endDhas a screw thread end which connects to the all-purpose nozzle
单选题
The 12-foot low-velocity fog applicator（）.
A
has a spray pattern 12 feet in diameter
B
can be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzles
C
has a 90°bend at its discharge end
D
has a screw thread end which connects to the all-purpose nozzle
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