【单选题】
China to HelpEuropeDevelop GPS Rival
China is to contribute to a new global satellite navigation system being developed byEuropean nations. The Galileo satellite system (51) a more accurate civilian alternative to the Global Positioning System (GPS), operated by the US military,China will provide 230mEuros (US
D、259m) in (52) and will cooperate with technical, manufacturing and market development. "China will help Galileo to (53) the major world infrastructure for the growing market for location services," said Loyola de Palacio,EU transport commissioner.A、new center that will coordinate co-operation was also announced (54) theEuropeanCommission, theEuropean SpaceAgencyESA、and theChinese Ministry of Science and Technology not long (55) . TheChina-Europe Global Navigation Satellite System Technical Training andCooperationCenter will be (56) atBeijing University.China has a substantial satellite launch industry and could potentially help launch the Galileo satellites.
The US has claimed that Galileo could interfere (57) the US ability to downgrade the GPS service during military conflicts.European officials say this is unfounded and counter that US opposition (58) the commercial challenge Galileo would present to GPS. Galileo will be precise to within meter, while the civilian GPS service is accurate to around 10 meters.
The Galileo satellite constellation will (59) 27 operational and three reserve satellites orbiting theEarth at an altitude of 23,600 km. The satellites will be strung along three medium-Earth orbits at 56 degrees inclination to the equator and will provide global coverage. The system should be operational by 2008 and the entire project is expected to (60) around 3.2 billion euros (US
D、3.6 billion) theEuropeanCommission has said Galileo will primarily be used for transportation technology, scientific research, land management and disaster monitoring.
Galileo will provide two signals: a standard civilian one and an encrypted, wide-band signal (61) the Public Regulated Service (PRS). This second signal is designed to withstand localized jamming and will be used by police and military services inEurope.EuropeanCommission (62) have saidChina will not be given access to the PRS.
The first Galileo satellite is scheduled to launch late in 2004.Clocks on board (63) will be synchronized through 20 ground sensors stations, two command centers and 15 uplink stations.
Receivers on the ground will use time signals from the satellites to precisely calculate their (64) .A、"search and rescue" function will also (65) distress signals be relayed through the constellation of satellites.
A．be made from
B．consist of
C．consist in
D、be consisted of
网考网参考答案：B
网考网解析：
[解析] 选项D错误。空白所在的句子说“伽利略人造卫星……27个运作卫星和3个储备卫星”，显然选项B(由……组成)出现在空白处时句意通顺。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
China is to contribute to a new global satellite navigation system being developed byEuropean nations. The Galileo satellite system (51) a more accurate civilian alternative to the Global Positioning System (GPS), operated by the US military,China will provide 230mEuros (US
D、259m) in (52) and will cooperate with technical, manufacturing and market development. "China will help Galileo to (53) the major world infrastructure for the growing market for location services," said Loyola de Palacio,EU transport commissioner.A、new center that will coordinate co-operation was also announced (54) theEuropeanCommission, theEuropean SpaceAgencyESA、and theChinese Ministry of Science and Technology not long (55) . TheChina-Europe Global Navigation Satellite System Technical Training andCooperationCenter will be (56) atBeijing University.China has a substantial satellite launch industry and could potentially help launch the Galileo satellites.
The US has claimed that Galileo could interfere (57) the US ability to downgrade the GPS service during military conflicts.European officials say this is unfounded and counter that US opposition (58) the commercial challenge Galileo would present to GPS. Galileo will be precise to within meter, while the civilian GPS service is accurate to around 10 meters.
The Galileo satellite constellation will (59) 27 operational and three reserve satellites orbiting theEarth at an altitude of 23,600 km. The satellites will be strung along three medium-Earth orbits at 56 degrees inclination to the equator and will provide global coverage. The system should be operational by 2008 and the entire project is expected to (60) around 3.2 billion euros (US
D、3.6 billion) theEuropeanCommission has said Galileo will primarily be used for transportation technology, scientific research, land management and disaster monitoring.
Galileo will provide two signals: a standard civilian one and an encrypted, wide-band signal (61) the Public Regulated Service (PRS). This second signal is designed to withstand localized jamming and will be used by police and military services inEurope.EuropeanCommission (62) have saidChina will not be given access to the PRS.
The first Galileo satellite is scheduled to launch late in 2004.Clocks on board (63) will be synchronized through 20 ground sensors stations, two command centers and 15 uplink stations.
Receivers on the ground will use time signals from the satellites to precisely calculate their (64) .A、"search and rescue" function will also (65) distress signals be relayed through the constellation of satellites.
A．be made from
B．consist of
C．consist in
D、be consisted of
网考网参考答案：B
网考网解析：
[解析] 选项D错误。空白所在的句子说“伽利略人造卫星……27个运作卫星和3个储备卫星”，显然选项B(由……组成)出现在空白处时句意通顺。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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