2-25.   Which of the following solvents will NOT ignite at a relatively low temperature? 1.  Varnishes 2.  Lacquers 3.  Water-based cleaning fluids 4.  Paints 2-26.   When you are using hazardous paints or solvents, which of the following safety precautions should you follow? 1.  Have a repair team standing by 2.  Have fire-fighting equipment near by 3.  Dispose of paints and solvents when you no longer need them 4.  Both 2 and 3 above 2-27.   When you use aerosol containers, which of the following basic safety rules should you follow? 1.  Keep them away from heat sources 2.  If their contents are paint or solvents, do not spray them on your skin 3.  Never dent or puncture them 4.  All of the above 2-28.   Which of the following is a favorable property of  polychlorinated biphenyls (PCBs)? 1.  High heat capacity 2.  High flammability 3.  High vapor pressure 4.  High electrical conductivity 2-29.   Polychlorinated biphenyls (PCBs) are used for which of the following purposes? 1.  As insulators in electrical equipment 2.  As coolants in electrical equipment 3.  As fluid in a totally enclosed heat transfer system 4.  All of the above 2-30.   What  NAVSEA publication is a management guide for PCBs? 1.  S9593-A1-MAN-010 2.  S9593-A2-MAN-010 3.  S9593-A1-MAN-020 4.  S9593-A2-MAN-020 2-31.   A battery is a group of cells that provides which of the following types of electrical power? 1.  Direct current only 2.  Alternating current only 3.  Direct and alternating current 4.  Direct or alternating current 2-32.   What is the difference between the carbon-zinc battery and the manganese-dioxide alkaline battery? 1.  The outer container 2.  The inner container 3.  The electrolyte used 4.  The carbon-centered electrode 2-33.   Which of the following batteries can best be described as a high-energy, long-lasting battery with a longer shelf life than most other batteries? 1.  Lithium 2.  Nickel-cadmium 3.  Carbon-zinc 4.  Manganese-dioxide alkaline 2-34.   Which of the following safety precautions does NOT apply to lithium batteries? 1.  Always observe polarity when you install them 2.  Always leave them in equipment for long periods to protect them 3.  Never throw them away in daily trash 4.  Use only the batteries that are approved for use in your equipment 2-35.   Which of the following types of batteries is used mostly in cordless, rechargeable equipment? 1.  Alkaline 2.  Lithium 3.  NICAD 4.  Carbon 2-36.   Which of the following types of batteries should always be charged in series, never in parallel? 1.  NICAD 2.  Lithium 3.  Carbon zinc 4.  Manganese dioxide 9