Which of the following terms is used to describe a one-piece piston?
A. crosshead
B. articulating
C. ceramic
D. trunk
Answer: D
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The relays that use optical coupling are referred to as being ____.
a. light-induced b. opt-isolated c. magneto-isolated d. zero switched
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A ____________________ is an overcurrent device that opens a circuit when a fusible link is melted away by the extreme heat caused by an overcurrent.
Fill in the blank(s) with the appropriate word(s).
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The major safety concern with R-410A compared to most other common refrigerants is that:
A) R-410A is flammable. B) R-410A is toxic. C) R-410A operates at much higher pressures. D) R-410A is chemically unstable.
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Orifices are used to regulate and/or control fluid pressures.
Answer the following statement true (T) or false (F)
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