单项选择题
A.complicated circumstances B.changeable atmospheric pressure C.large density of traffic D.some strong signals from unwanted satellites
The satellites over the major ocean regions cover the g...
单项选择题The satellites over the major ocean regions cover the globe（）.
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
The Inmarsat system has five major components, they are...
单项选择题The Inmarsat system has five major components, they are:（）.
A.Space segment, NCC, RCC, SES and CES B.Space Segment, a satellite system, C system, NCC and NCS C.Space Segment, NCC, NCS,CES and SES D.A system, C system, satellite system, earth stations and NCS
The INMARSAT consists of（）major components.A.4B.9C.8D.5
单项选择题The INMARSAT consists of（）major components.
A.4 B.9 C.8 D.5
