• 2022-06-07 问题

    The 24 satellites in the Global Positioning System ( GPS ) are synchronous satellites, and they appear to be stationary to an observer on the earth.

    The 24 satellites in the Global Positioning System ( GPS ) are synchronous satellites, and they appear to be stationary to an observer on the earth.

  • 2022-06-12 问题

    These satellites constantly transmit an identifying .

    These satellites constantly transmit an identifying .

  • 2021-04-14 问题

    One or two man-made satellites _______ in this country every year.

    One or two man-made satellites _______ in this country every year.

  • 2022-06-07 问题

    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

    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

  • 2021-04-14 问题

    Why do we use the weather satellites to take pictures of the atmosphere? Because __________.

    Why do we use the weather satellites to take pictures of the atmosphere? Because __________.

  • 2022-06-17 问题

    The photos of Mars taken by satellites are (clear) ______ man those taken from Earth.

    The photos of Mars taken by satellites are (clear) ______ man those taken from Earth.

  • 2022-06-07 问题

    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

    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

  • 2022-06-07 问题

    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

    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

  • 2022-06-17 问题

    The photos of Mars taken by satellites (卫星) are (clear)______ than those taken from the Earth.

    The photos of Mars taken by satellites (卫星) are (clear)______ than those taken from the Earth.

  • 2022-06-17 问题

    The photos of Mars taken by satellites(卫星) are(clear) ______ than those taken from earth.

    The photos of Mars taken by satellites(卫星) are(clear) ______ than those taken from earth.

  • 1 2 3 4