?Changes in the step-off current have been associated with arc stability________________.
A. ?to make vertical up and overhead welds
B. ?when only AC power is available for the welding current
C. ?on aluminum and copper alloys
D. ?for some higher electrically resistant filler metals such as stainless steel and nickel alloys
Answer: D
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The immediate purpose of the Albany Congress of 1754 was to
A. request the help of the British military. B. keep the Iroquois tribes loyal to the British. C. prevent the French from attacking American outposts. D. support George Washington's desire to head the colonial militia. E. block British efforts to take control of New York City.
One of the early symbols of the dawning era of consumerism in urban America was
A. mass-production factories. B. the Sears catalog. C. advertising billboards. D. public transportation systems. E. large department stores.
Draw the influence lines for the reaction at A and for the shear and moment at points B and C. The rocker at D is equivalent to a roller.
Generally as tree cover increases forage for livestock and wildlife:
A) decreases. B) increases. C) is not much affected.