A、black and green bands B、red and green bands C、red and yellow bands D、yellow and green bands
A、black and green bands B、red and green bands C、red and yellow bands D、yellow and green bands
A、把从直连专线学到路由的LocAl-Preference设置为500 B、把从直连专线学到路由的LocAl-Preference设置为100 C、把从直连专线学到路由的LocAl-Preference设置为200 D、把从直连专线学到路由的LocAl-Preference设置为300
A、A.odd or even numbers B、B.the color of their top band C、C.the location of the buoy in the channel junction D、D.the buoy's light rhythms