Welders must maintain a short arc when welding stainless steel to limit atmospheric contamination, which
causes _____.
a. corrosion
b. flexibility
c. hardness
d. porosity
d
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What is one reason mammals are divided into groups?
What will be an ideal response?
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When servicing a driveshaft, technician A says that its a good idea to tape the U-joint caps to prevent them from coming off. Technician B says that needle bearings are used with these type U-joints. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
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Which metering device used on flooded evaporators opens when more refrigerant condenses, enabling the refrigerant to flow into the evaporator?
A) Electronic expansion valve B) High side float C) Low side float D) Automatic expansion valve
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