A finished GTAW weld bead has no slag to be removed because _____.
a. no flux is used
b. oxygen is used as the shielding gas
c. the weld arc consumes the flux
d. tungsten is used as the filler metal
Answer: A
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It is desirable to take the time and necessary precautions to make welds that are no darker than ____.
A. dark blue B. tan C. brown D. purple
Which type of refrigerant has the highest Ozone Depletion Potential (ODP)?
A. HFC B. HCFC C. CFC D. All have the same ODP.
During the Civil War, Britain and the United States were nearly provoked into war by
A. the incompetence of Charles Francis Adams, the United States ambassador to London. B. Britain's refusal to observe the Union's blockade of Southern ports. C. the Trent affair, involving the removal of Southern diplomats from a British ship by a Union warship in 1861. D. Napoleon III's effort to place Maximilian on the Mexican throne. E. British working-class support for the South.
Describe the differences between an open draft cooling system and a forced draft system.
What will be an ideal response?