64.5E
178E
15.5W
54W
第1题:
AMVER is a system which provides ______.
A.satellite communications
B.navigational information
C.weather information
D.position reporting service
第2题:
If ______ is shut down for an extended time optimum position fixing will take up to 2 hours after power is reapplied.
A.radar
B.DF
C.Satellite Navigator
D.Automatic Omega Navigator
第3题:
The abbreviation PPI in the Sperry Collision Avoidance System means ______.
A.plan position indicator
B.plain position indicator
C.plane position indication
D.policy proof of interest
第4题:
在inmarsat-f业务中北京地面站支持()洋区的业务
第5题:
Inmarsat系统中,新加坡岸站兼作()卫星覆盖区的NCS。
第6题:
What does not contribute to the commercial GPS receiver position error ________.
A.Satellite clock
B.Ship's speed
C.Atmospheric/ionospheric propagation
D.Receiver
第7题:
在Inmarsat系统中IOR表示的洋区是()
第8题:
A、typical
B、fundamental
C、characteristic
D、pointless
第9题:
在Inmarsat系统中IOR-E表示的洋区是()
第10题:
以下哪两个INMARSAT卫星之间没有重叠区()