The type of electronic distance-measuring instrument that uses a transmitter/receiver at both ends ...

The type of electronic distance-measuring instrument that uses a transmitter/receiver at both ends of a
  measurement line is a(n) _____.
 
  a. infrared
  b. microwave
  c. ultrasonic
  d. visible laser

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[Ques. 2] Horizontal and vertical angle readings on electronic transit levels and theodolites are shown on a(n) _____.
 
  a. smartphone
  b. analog meter
  c. tablet computer
  d. liquid crystal display

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[Ques. 3] The side of a right triangle opposite the 90-degree angle is the _____.
 
  a. hypotenuse
  b. hypotherm
  c. hypothesis
  d. hypotreme

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[Ques. 4] To be sure your instrument is located directly over a reference point, one tool to use is a _____.
 
  a. plumb bob
  b. hand sight level
  c. chaining pin
  d. range pole

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[Ques. 5] The distance measurement called taping is also referred to as _____.
 
  a. pacing
  b. chaining
  c. triangulating
  d. scaling