To discourage discoloration or spoiling, ____ barrier layers are incorporated into packaging films. ?
A. ?silicon
B. ?oxygen
C. ?latex
D. ?polyethylene
Answer: B
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To avoid confusion when reading electrical drawings with OFF delay contacts, it must be remembered that normal refers to the coil ____________________ it has been deenergized.
Fill in the blank(s) with the appropriate word(s).
When the oil tank is above the oil burner pump, the fuel oil supply system would normally be a ____.
A. gravity flow, one-pipe system B. single-stage pump, two-pipe system C. two-stage pump, one-pipe system D. two-stage pump, two-pipe system
If a thermostat fails in the open position, all of the following will occur, EXCEPT:
A. longer than normal warm-up period. B. poor heater performance. C. loss of coolant. D. erratic computer control system operation.
Which of the following is the correct definition of station point?
A. exact location from which observer views the object B. point in front of the object C. exact location of the center of the object D. none of the above