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

The information regarding ports such as buoyed channels,fairway,location and number of terminals,river channels,details of navigational marks,location of overhead bridges, underground cables etc. are shown in()

A.small-scale charts
B.medium-scale charts
C.large-scale charts
D.natural scale charts

微信掃碼免費(fèi)搜題