单项选择题
A.Goonhilly, UK B.Yamaguchi, Japan C.Perth, Australia D.Southbury, USA
The position of the INMARSAT satellite over the Atlanti...
单项选择题The position of the INMARSAT satellite over the Atlantic Ocean Region-W is（）.
A.180E above the equator B.64.5 E over the IOR C.15.5W along the straight line D.55.5W above the equator
Mariners should pay much attention in the overlapped ar...
单项选择题Mariners should pay much attention in the overlapped area owing to（）.
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
