The main 1 fuel nozzles have a purple color band ，while main 2 fuel nozzle is the similar but has no color band.9. The above sentence means “主一燃油喷嘴有一条紫颜色的色带，而主二燃油喷嘴与主一类似，也有一条色带”。
A.1正确答案B
The main 1 fuel nozzles have a purple color band ，while main 2 fuel nozzle is the similar but has no color band.9. The above sentence means “主一燃油喷嘴有一条紫颜色的色带，而主二燃油喷嘴与主一类似，也有一条色带”。
A.1正确答案B
