A.100% B.80% C.70% D.50%
A.大風(fēng)警報(bào) B.一般警報(bào) C.濃霧警報(bào) D.風(fēng)暴警報(bào)
A.0.5~5nmile B.小于0.5nmile C.小于2nmile D.2~5nmile