satellite (随体)
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1、The first communication satellite was
The first communication satellite was used for the purpose of（）.Ataking the place of the radio systemBintroducing a new life-saving systemCsaving the vessels in distressDimproving the communication on land
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2、There are（）operational satellites in t
There are（）operational satellites in the INMARSAT system covering the whole globe except the polar regions.A3B4C8D12
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卫星RNA（satellite RNA，sRNA）
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4、随体
随体
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5、The satellite system of GAMDSS compris
The satellite system of GAMDSS comprise（）.ANAVTEX, COSPAS/SARSAT, EPIRBs and Status Recording-systemBInmarsat,COSPAS/SARSAT, EPIRBs and Status Recording-systemCNAVTEX, Inmarast,EPIRBs and SARTDInmarsat, direct Printing Telegraphy
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6、The position of the INMARSAT satellite
The position of the INMARSAT satellite over the Atlantic Ocean Region-W is（）.A180E above the equatorB64.5 E over the IORC15.5W along the straight lineD55.5W above the equator