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A new kind of radar has been developed for spaceship travelers. A working laboratory model of a n...

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laser-doppler radar is more accurate than microwave radar  microwave radar may not ensure absolute precision in measuring varying speeds  the light-beam radar can measure only slow speeds with accuracy  microwave radar operates at a higher frequency than laser-doppler radar  
it is one thousand times more precise than microwave radar  it provides precise measures of the velocity of space vehicles  it is a new system of radar  it can measure the movement of a spaceship less accurately than a microwave radar  
even in clear weather radar should be used  radar should be used only in clear weather  when approaching a very large ship or a tow or when approaching a ship at close rangeradar should not be used  in modern times, radar has little use for navigation  
it is one thousand times more precise than microwave radar  it provides precise measures of the velocity of space vehicles  it is a new system of radar  it can measure the movement of a spaceship less accurately than a microwave radar  
laser-doppler radar is more accurate than microwave radar  microwave radar may not ensure absolute precision in measuring varying speeds  the light-beam radar can measure only slow speeds with accuracy  microwave radar operates at a higher frequency than laser-doppler radar  
accuracy in speed measurement is essential to spaceships  the speeds of space vehicles will vary  inaccuracies in measurement could cause accidents in space missions  a bump could affect the preciseness of the laser-doppler radar  
Rendezvous in Space  Landing at a Space Station  New Radar for the Space Age  Space Navigation  
measures the movements of a spaceship by means of light beam  makes use of microwaves  makes use of sound waves  Both A and B  
laser-doppler radar is more accurate than microwave radar  microwave radar may not ensure absolute precision in measuring varying speeds  the light-beam radar can measure only slow speeds with accuracy  microwave radar operates at a higher frequency than laser-doppler radar  
it is one thousand times more precise than microwave radar  it provides precise measures of the velocity of space vehicles  it is a new system of radar  it can measure the movement of a spaceship less accurately than a microwave radar  
laser-doppler radar is more accurate than microwave radar  microwave radar may not ensure absolute precision in measuring varying speeds  the light-beam radar can measure only slow speeds with accuracy  microwave radar operates at a higher frequency than laser-doppler radar  
measures the movements of a spaceship by means of light beam  makes use of microwaves  makes use of sound waves  Both A and B  
it is one thousand times more precise than microwave radar  it provides precise measures of the velocity of space vehicles  it is a new system of radar  it can measure the movement of a spaceship less accurately than a microwave radar  
measures the movements of a spaceship by means of light beam  makes use of microwaves  makes use of sound waves  Both A and B  
accuracy in speed measurement is essential to spaceships  the speeds of space vehicles will vary  inaccuracies in measurement could cause accidents in space missions  a bump could affect the preciseness of the laser-doppler radar  
accuracy ill speed measurement is essential to spaceships  the speeds of space vehicles will vary  inaccuracies in measurement could cause accidents in space missions  a bump could affect the preciseness of the laser-doppler radar  
accuracy in speed measurement is essential to spaceships  the speeds of space vehicles will vary  inaccuracies in measurement could cause accidents in space missions  a bump could affect the preciseness of the laser-doppler radar  

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