Grease and oil must be kept away from oxygen tanks used for brazing because they _____
a. will contaminate the brazed joints and cause them to fail
b. could trigger an explosion in the presence of oxygen
c. are incompatible with lubricants used on the oxygen regulator
d. will clog the oxyacetylene torch
b
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? Identify and state the historical significance of Alexander Graham Bell.
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What kind of erosion takes place when topsoil is removed fairly evenly across a large area?
What will be an ideal response?
Mercantilist policies led to the flourishing of which of the following groups?
a. smugglers and pirates b. farmers and rural laborers c. artisans and cottage laborers d. bankers and accountants
The intent of this test is to examine the interior of the weld:
A) Fillet test B) Bend test C) Tensile test D) Nick-Break test