By resting the edges of the cup lightly on the groove face when walking the cup, the cup has _____ points of contact.?
?
A. two?
B. three?
C. four?
D. zero?
Answer: A
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Symbol F in Figure 2 represents a _____.
a. float switch b. temperature switch c. pressure switch d. foot switch
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____ is a highly effective an oxygen-depleting gas used to extinguish all types of fires.
A. Zenon B. Oxygen C. Halon D. Argon
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After being threaded many times, the screw holes in condenser cabinets may become oversized; if so, replace the screws with new ones of the same size.
Answer the following statement true (T) or false (F)
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The SI unit for mass (and weight) used today is:
A) Ounce. B) Meter. C) Kilogram. D) Pound.
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