The satellites over the major ocean regions cover the globe().
A、A.besides the polar regions
B、B.including the North Pole and the South Pole
C、C.above 70N and below 70S
D、D.as far north and south 70
A、A.besides the polar regions
B、B.including the North Pole and the South Pole
C、C.above 70N and below 70S
D、D.as far north and south 70
A、A.180E above the equator B、B.64.5 E over the IOR C、C.15.5W along the straight line D、D.55.5W above the equator
A、While a fix can be generated by signals received from two satellites,three satellites are necessary for reliable accuracy B、The satellites are in equatorial orbits around the earth about 60°of longitude apart C、The satellite navigation system determines a fix by measuring the doppler shift of the radio signals from the satellite D、The ship's receiver cannot begin processing data until the antenna locks onto the satellite and starts continuous tracking
A、besides the polar regions B、including the North Pole and the South Pole C、above 70N and below 70S D、as far north and south 70
A、Allows two satellite tuners to use the same dish. B、Connects the low noise block down converter (LNB) to the multi-switch. C、Combines satellite and over the air (OTA) signals. D、Allows one LNB to use two satellites.
A、besides the polar regions B、including the North Pole and the South Pole C、above 70°N and below 70°S D、as for north and south as 70°
A、speed of the vessel over the ground or through the water B、distance to the next port C、time of the next navigational satellite pass D、None of the above
A、the weather over there is always terrible B、the condition there is complicated C、the signals are too strong D、their SES may receive the signals from unwanted satellite
A、The saloon is over there. B、The galley is over there. C、The cabin is over there. D、The lavatory is over there.
A、A. The saloon is over there. B、B. The galley is over there. C、C. The gallery is over there. D、D. The lavatory is over there.