Three major types of cutting fluids (liquids) are:
A) Semi-synthetic, emulsions, tram oils
B) Lubricating oils, soluble oils and transparent emulsions
C) Emulsion, synthetic and cutting oils
D) Water, oil and emulsion
C
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In a(n) ____________________-type ignition system, a weak battery can cause ignition failure.
Fill in the blank(s) with the appropriate word(s).
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A 15-lead motor has ____ coils per phase.
a. one b. two c. three d. four
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What color code is normally used to identify an oxygen hose on an oxy-acetylene station?
A. blue B. red C. black D. green
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Which of the four types of refrigeration systems cools the air without removing any heat from the air?
A) Mechanical refrigeration systems B) Thermoelectric systems C) Evaporative systems D) Absorption refrigeration systems
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