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
您可能感興趣的試卷
你可能感興趣的試題
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
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.sometimes
B.all times
C.never
D.partly
A.the only preamble
B.a part of the preamble
C.the closing
D.the suspension
最新試題
The advantage of geostationary satellites is（）.
What following is not among the function of SOLAS ships?（）
The rescue coordination center may（）on stations which interfere with traffic.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
Please use（）for（）.
The priority of EGC messages is classified by（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Before GMDSS, if the radio officer on board is serious ill,（）.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.