A、all fishing vessels over 39 feet in length
B、sail-propelled fishing vessels
C、all fishing vessels of less than 200 GT
D、wooden hull fishing vessels with a poor radar echo
更多“Radar reflectors are required for（）.”相关的问题
A、all fishing vessels over 39 feet in length B、sail-propelled fishing vessels C、all fishing vessels of less than 200 GT D、wooden hull fishing vessels with a poor radar echo
A、the shore is bluff and rocky B、of offshore exposed rocks C、submerged reefs cause prominent breakers D、the lookout tower is marked with radar reflectors
A、Clusters are used in confederation schemes to avoid loops. B、BGP network can have a confederation within a route reflector area. C、An internal BGP network cannot have a route reflector within a confederation. D、An internal BGP network can have a route reflector within a confederation. E、Clusters are used in route reflector schemes to avoid loops. F、BGP network cannot have a confederation within a route reflector area.
A、Raising the antenna height increases the radar range B、The ability of radar to detect objects is unaffected by weather conditions C、Radar bearings are less accurate than radar ranges D、Radar should be checked regularly during clear weather to ensure that it is operating properly
A、can usually be detected by radar in a smooth sea at a range of 4 to 6 kilometers B、are indistinguishable from sea return on the PPI C、are invisible to radar when covered with a thick layer of snow D、are usually seen at night before they are close enough to provide a radar echo
A、Radar ranges are less accurate in fog B、Navigation buoys will always show up on radar C、A sandy beach will show up clearer on radar than a rocky cliff D、Small wooden boats may not show up on radar
A、Your speed must be reduced to bare steerageway B、A look-out is not required if the radar is on C、Fog signals are only required when a vessel is detected by radar D、The radar should always be kept on a short-range scale
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