單項(xiàng)選擇題

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

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單項(xiàng)選擇題

The INMARSAT consists of（）major components.

A.4
B.9
C.8
D.5

單項(xiàng)選擇題

why should the SES operators be very careful when the ship enters the area where three ocean regions overlap? Because（）.

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

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