Which of the following common welding components are missing from the aluminum GTAW process, resulting in minimal corrosion from slag entrapment?
a. Flux
b. Argon
c. Inert gas
d. Backing gas
a
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Information on prints that cannot be represented graphically by lines may be presented by:
a. lettered dimensions b. notes c. titles d. all of the above
On a package air-conditioning system, which refrigerant lines must be field-installed?
A. Discharge and suction. B. Liquid and suction. C. Discharge and liquid. D. No lines need to be field-installed.
The ratio of the amount of moisture in the air to the maximum amount of moisture that air can hold is known as
a. dew point. b. absolute humidity. c. relative humidity. d. none of the above
Before vinyl siding installation, window sill extensions may be cut off to permit a flush fit for the _____
a. starter strips b. J-channel c. T-bevels d. siding caps