1-42. 1-43. 1-44. 1-45. 1-46. 1-47. What type of oil filtering system does NOT filter the oil before it is sent to the engine? 1. Bypass 2. Full flow 3. Partial  flow 4. Alternate  pass Which of the following is NOT a common  type  of  base  for  hydraulic fluid? 1. Water 2. Petroleum 3. Lithium 4. Synthetic Gear oils break down or foam at high  temperatures. 1. True 2. False Grease  lube  charts  state  locations of grease fittings and how often the  fitting  should  be  lubricated. 1. True 2. False What  person  has  the  responsibility for  greasing  equipment? 1. Yard boss 2. Operator 3. Company  clerk 4. Grease  rack  custodian Learning  Objective: Recognize the  principles  and  components of engine cooling systems. The  cooling  system  assists  the engine in warming up to its normal  operating  temperature. 1. True 2. False 1–48. 1-49. 1-50. 1-51. 1–52. What  material  is  used  extensively on  air–cooled  engines  to  help dissipate  heat? 1. Titanium 2. Plastic 3. Steel 4. Aluminum A pump draws coolant from the bottom of a radiator. 1. True 2. False What  total  number  of  degrees Fahrenheit  per  pound  of  coolant does a radiator pressure cap raise the  boiling  point  of  the  coolant? 1. 12 degrees 2. 9 degrees 3. 3 degrees 4. 6 degrees Which  of  the  following  conditions, if any, causes the vacuum valve to open on a radiator pressure cap? 1. The  cooling  system  pressure raises  above  the  outside pressure as the engine cools 2. The  cooling  system  pressure drops  below  the  outside pressure as the engine cools 3. The  cooling  system  pressure raises  above  the  outside pressure as the engine warms 4. None Which of the following is NOT a property of water that limits its usefulness  as  a  coolant? 1. Boiling  point 2. Freezing  point 3. Natural  corrosive  action on metal 4. Chlorine  content  in  the  water up 5