4-7. Which  level  of  maintenance  is normally  performed  by  aircraft carriers, tenders in support of other  ships,  public  works departments,    and  designated  shore activities? 1. Departmental 2. Depot 3. Intermediate 4. Organizational 4–8. Operational  maintenance  is  the  care and  (a)  major/minor maintenance  of equipment using procedures that  (b) do/do  not require detailed technical  knowledge  of  equipment and/or  system  functions  and  is performed by (c)  operator/technical personnel. 1. (a) minor (b) do (c) technical 2. (a) minor (b) do not (c) operator 3. (a) major (b) do not (c) technical 4. (a) major (b) do (c) technical 4–9. Which  of  the  following  purposes pertain(s)  to  operational maintenance? 1. To make operators more aware of the state of readiness of the equipment 2. To reduce the delays that can occur if a technician is called every  time  a  simple  adjustment is  needed 3. To  release  technicians  for  more complicated  work 4. All of the above 4–10. Which of the following is the ultimate  objective  of  preventive maintenance? 1. To check the performance and operability  of  equipment  and systems 2. To  detect  and  correct  faults early so they will not result in  equipment  failure  later 3. To  maintain  equipment  at  least at a minimum level of readiness 4. To  maintain  technical  expertise an all ship’s equipment and systems 4-11. In  qeneral,   equipment  failures  are governed by which of the following factors? 1. The type and aqe of the equipment  and/or  systems 2. Manufacturers'  defects,  quality of  installation,  and  the  type of  equipment  and/or  systems 3. The complexity of the equipment, the demands placed upon  it,   and the abuse to which it is subjected 4. The lack of trained operator and/or  technical  personnel,  and the age of the equipment and/or systems 4–12. Which  of  the  following  statements best  describes  the  responsi– bilities  of  the  supervisor  toward his or her assigned work center or group  equipment  and  systems? 1. The supervisor has only the responsibility  of  leading  his or her personnel. He or she does not need to have any knowledge  of  the  equipments 2. The  supervisor  should  have adequate knowledge of all the electronic  equipments  and systems for which he or she is responsible 3. The supervisor must be proficient in all of the assigned  equipments  to supervise the work center or group 27