Geostationary satellites are the man-made satellites which .
A: are always fixed in the regular position
B: sometimes move with the earth
C: are synchronizing with the movement of the earth
D: can not fly off from the ground
A: are always fixed in the regular position
B: sometimes move with the earth
C: are synchronizing with the movement of the earth
D: can not fly off from the ground
举一反三
- It is possible to use satellites to predict earthquakes because satellites ________. A: take pictures of the Earth B: catch radio waves sent from the Earth’s surface C: are sensitive to Earth’s movements D: see almost the entire Earth
- Unlike the American GPS, Russian GLONASS, and European Galileo systems, which use median Earth orbit satellites, BeiDou-1 uses satellites in （ ）. A: Geostationary orbit B: Circular orbit C: Sun-synchronous orbit D: Near polar orbit
- Modern communications satellites use a variety of orbits, including ( ). A: geostationary orbits B: Molniya orbits C: elliptical orbits D: low (Polar and non-polar) earth orbits
- ()service means a service which is based on polar orbiting satellites which receive and relay distressalerts from satellite EPIRBs and which provides their position . A: Geostationary satellite B: Near-polar orbiting satellite C: synchomizing satellite D. D: Terrestrial satellite
- A GPS receiver, or GPS sensor, is able to determine its position and velocity ______ the earth’s surface by calculating the amount of time it takes for signals from different GPS satellites to reach the receiver. A: on top of B: next to C: in spite of D: relative to