Shield gas affects:
A) Fusion B) Operator appeal C) Bead appearance D) All of the above
D
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Which of the following is used to check the rotating speeds of motors?
a. Insulation resistance tester b. Tachometer c. Spring tension scale d. Stethoscope
Through genetic engineering, scientists have been able to produce plants that are resistant to ____
a. poison c. eating b. herbicides d. picking
How does a cooling tower remove energy from the water it is circulating?
A) It cools the refrigerant by evaporating a small portion of the refrigerant to the air. B) It cools the water flowing through it by passing it over ice that is made during off-peak hours. C) It cools the water flowing through it by evaporating a small portion of the water. D) It cools the water flowing through it by using a separate compression refrigeration system.
The condenser in a refrigeration system ____.
A. desuperheats the vapor from the compressor B. condenses the vapor from the compressor C. subcools the liquid refrigerant before it leaves the condenser D. all of the above