When welding with GTAW in a cross draft situation, better shielding is provided by _____

a. argon
b. helium
c. hydrogen
d. carbon dioxide


a

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A hybrid-electric truck is being serviced. Technician A says that orange-colored wire insulation indicates 12V circuits. Technician B says that although he has no experience working with hybrid electric trucks, the only way to learn is by doing. Who is correct?

A. A only B. B only C. Both A and B D. Neither A nor B

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A possible remedy for markoff in the production process is to ____.  ?

A. ?increase chilling time B. ?add vacuum holes C. ?check the vacuum system D. ?clean the mold

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One -way concrete joist floors can either be standard-module, one-way joist floors or wide-module, one-way joist floors. Which of these two was introduced first?

What will be an ideal response?

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Air at 30ºC and 90% humidity is conditioned to 25ºC and 50% humidity. The heat that must be added in this process is nearest:

A) 10 kJ/kga B) 12 kJ/kga C) 14 kJ/kga D) 16 kJ/kga

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