单项选择题
A.the light-house B.the anchorage C.the pilot station D.the light-buoy
There is sufficient anchorage for（）at all time around t...
单项选择题There is sufficient anchorage for（）at all time around the No.1 buoy and for smaller vessels around the No.4 buoy.
A.deep laded vessels B.deeply load vessels C.deep loading vessels D.deeply loaded vessels
The shortest distance between any two points on earth d...
单项选择题The shortest distance between any two points on earth defines a（）.
A.small circle B.great circle C.rhumb line D.hyperbola
The positions and characteristics of lights and buoys s...
单项选择题The positions and characteristics of lights and buoys shown within the port area are（）.
A.untrue B.impossible C.suspectful D.unimportant
