6-9. 6-10. 6-11. 6-12. 6-13. When you do trigonometric leveling  with  an  electronic distancing measuring device, what other  instrument  is  used  to measure your angles? 1. Transit 2. Theodolite 3. Level 4. Alidade Before  beginning  computations based on your field notes, you should perform which of the following  actions? 1. Reduce  slope  measurements 2. Reduce  angles  to  mean  angles 3. Check  notes  for  completeness 4. Each of the above When you are discussing computations, the term adjustment refers to 1. fudging of the numbers 2. alignment  of  columns 3. equal  distribution  of  the total error What  are  you  verifying  by checking  the  difference  in foresights  and  backsights? 1. Balanced  foresights  and backsights 2. Arithmetic  accuracy 3. Error of closure 4. BM  elevation The term  error of closure  is defined as the difference between 1. the  beginning  elevation  and the ending elevation of two different  points 2. the  beginning  elevation  and ending elevation of a level loop 3. the ending elevation of a level  circuit  and  measured elevation  of  that  point 6-14. 6-15. 6-16. 6-17. 6-18. Since the error of closure is distributed proportionally, what information  must  be  obtained  while running  the  level  loop  or  circuit? 1. Distance  of  foresights  and backsights 2. Distance  of  foresights  only 3. Distance  of  backsights  only 4. Temperature  and  humidity You have just completed a level circuit run of 2,640 feet. The error of closure was .021 feet. What order of precision is this leveling  work? 1. First 2. Second 3. Third 4. Fourth When adjusting a level net, you adjust each leg only once, regardless of a leg being in more than one circuit. 1. True 2. False The terms elevation angle and depression  angle  refer to which of the  following  situations 1. The  rod  location  in  relation  to the  instrument 2. The value of the vertical angle 3. The  instrument  location  in relation to the rod 4. Each of the above In  first-  or  second-order  leveling, which of the following statements is  true? 1. These  level  circuits  never  close on  themselves 2. The  actual  distance  leveled  is the length of the circuit 3. These  level  circuits  close  on the  beginning  bench  mark 4. These  circuits  are  less  precise than  third-order  level  circuits 35