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On an airplane, a spacecraft or a man-made satellite, there is usually an installed device calle...

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Finch's airplane is a jet plane while Earhart's was not.  Finch's airplane is equipped with the modern navigation and weather-tracking systems.  No differences have been found. Finch's airplane is an exact copy of Earhart's in every aspect.  Finch's airplane is an improved version of Earhart's in flying speed and altitude.  
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will function    functioned    is functioning    has functioned  
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Because it remains a mystery what wavelengths are liable to be interfered with.  Because it is extremely dangerous to conduct such research on an airplane.  Because research scientists have not been able to produce the same effects in labs.  Because experts lack adequate equipment to do such research.  
the airplane  the automobile  both the plane and the automobile  neither the plane nor the automobile  
an;/   an;an   /;an   an;the  
shipment  ship  cal  airplane  
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She was successful in her world flight.  Her airplane was blown away by the strong winds over the equator.  She lost her way after failing in.communicating with the Naval station around the equator.  D) Her airplane disappeared while flying over the Pacific Ocean.  
Aeronautical Fixed Telecommunication Network  Airplane Fixed Telecommunication Network  Aeronautical Fixed Telephone Network  Airplane Fixed Telephone Network  
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unfortunately  largely  consequently  roughly  
timetable  plan  date  schedule  
an; /    /; an    an; an    the; an  
shipment  ship  car  airplane  
/;the  /;an  an; an  the;the  

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