The simplest plasma arc cutting units use filtered _____
a. carbon dioxide
b. nitrogen
c. compressed air
d. helium
c
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____ are two rafters nailed together and placed perpendicular to the ridge to support the sheathing on the inclined edge of an opening.
A. Trimmers B. Ridges C. Plates D. Crowns
In the AWS specification for carbon steel-covered arc electrodes, a 2 to the right of the tensile strength indicates the following welding position(s): ____.
A. flat, horizontal, overhead, and vertical-down B. all positions flat, horizontal, vertical, and overhead C. flat only and is no longer used D. horizontal fillets and flat
Stephen Bourne at AT&T Bell Labs developed the ____ shell as the first UNIX command processor.
A. Bash B. Bourne C. C D. Korn
Supervisors are required to conduct a detailed investigation whenever an accident occurs in their area of responsibility
Indicate whether the statement is true or false