A.Goonhilly, UK
B.Yamaguchi, Japan
C.Perth, Australia
D.Southbury, USA
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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
A.complicated circumstances
B.changeable atmospheric pressure
C.large density of traffic
D.some strong signals from unwanted satellites
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.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
A.4
B.9
C.8
D.5
最新試題
COSPAS-SARSAT is intended to be used for（）.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
The rescue coordination center may（）on stations which interfere with traffic.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
（）will form the basis for distress alerting and safety calling.
All coast radio stations（）DSC installed for VHF and HF.
What following is not among the function of SOLAS ships?（）
On-scene communications will normally take place between（）.