无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

單項(xiàng)選擇題

Generally,()are used as the track charts on the high sea,()are used for harbors,inland waters and coastal areas.

A.Mercator charts/Loran charts
B.Admiralty charts/Routeing charts
C.large scale charts/small scale charts
D.small scale charts/large scale charts

微信掃碼免費(fèi)搜題