The face reinforcement of a V-groove weld with backing using 1/4" aluminum plate should not exceed
_____.
a. 1/16" (1.6 mm)
b. 3/32" (2.4 mm)
c. 1/8" (3.2 mm)
d. 1/4" (6.4 mm)
b
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Asphalt-based ____ products do not provide sufficient resistance to groundwater, nor are they durable enough to last the life of a structure.
A. damp-proofing B. waterproofing C. moisture-proofing D. vapor-proofing
What makes activated charcoal ideal for trapping gasoline fumes?
A) Large surface area B) High boiling point C) Low flash point D) None of these
A chemical liquid has gotten into your eye. You should flush it with water at the eyewash station for at least:
A. five minutes B. fifteen minutes C. ten minutes D. twenty minutes
?When mounting a collector on a roof, what should mounting hardware be fastened to?
A. ?roof decking B. ?oriented strand board C. ?rafters or top cord of wooden trusses D. ?plywood