单项选择题
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
单项选择题 Splices made in nylon should（）.
单项选择题 Right-laid line should be coiled（）.
单项选择题 On small sailing vessels，the PRIMARY reason for using nylon in a combination chain-nylon anchor line is to（）.
