10-67. You are having difficulty aligning the transit cross hair with the vertical axis of the sighted object. Which  of  the  following errors  is  most  likely  responsible for  this  difficulty? 1. Improper  focusing 2. Not  centering  the  plate  level bubbles 3. Plumbing the transit poorly 4. Failure  to  align  the  vertical cross hair with the true axis of the object 10-68. Which of the following situations is  considered  a  mistake  in  transit work? 1. Failure to record the direction in which an angle was turned 2. Turning a deflection angle in the wrong direction 3. Reading the wrong vernier 4. Each of the above 10-69. The carrying case for a transit or a theodolite is specifically designed for which of the following   conditions? 1. To protect the instrument from extreme   temperatures 2. To serve as a part of the instrument when it is set up for use in the field 3. To  prevent  excess  motion  when the  instrument  is  being carried 4. All of the above 10-70. Which  of  the  following  actions should you take after an instrument  has  been  exposed  to rain and has been wiped down with a clean cloth or chamois leather? 1. Dry it in a heated room 2. Stow it right away in its case 3. Dry  it  thoroughly  at  ordinary room  temperature 10-71. What  is  the  recommended  lubricant for  surveying  instruments  at sub-zero   temperatures? 1. Oil 2. Water 3. Petrol 4. Graphite 10-72. Which of the following statements describes  the  characteristics  of an open traverse as compared to a closed  connecting  traverse? 1. An open traverse has only one previously determined end point,  but  a  closed  connecting traverse  has  two 2. Both types of traverses may not be used for preliminary surveys 3. An open traverse is open at both ends,   but a closed connecting traverse forms a loop so that the ends are closed 4. A closed traverse provides fewer checks against error than an open traverse 10-73. In a lower order survey of a road center line,   the exact route and station  locations  are  selected  so that provisions are made for which of  the  following  conditions? 1. Only the rear station is visible from any station 2. Only  the  forward  station  is visible from any station 3. Both stations are visible from any one station and the maximum number of instrument setups can be kept 4. Both stations are visible from any one station and the number of instrument setups can be kept to a minimum 10-74. In  double  taping  between  traverse stations,    you should use which of the  following  procedures? 1. Use only tapes that are calibrated 2. Ensure  the  stations  are  spaced so  that  the  distance  between stations is less than a full-tape  length 3. Continue  taping  until  the tie-in  control  point  is reached;    then  retape  all measurements 4. Retape  line  measurements  not within  allowable  limits 10-75. Which  of  the  following  traverse stations may be a point with a known  azimuth  location? 1. Forward 2. Rear 3. Occupied 74