The first orbital welding heads were used by the _____ and nuclear power industries to meet their need for a highly reliable and cost-effective way of producing pipe welds.?
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Fill in the blank(s) with the appropriate word(s).
aerospace
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The first choice to perform finish work is the _____.
a. bulldozer b. scraper c. grader d. excavator
The Watts riot in 1965 symbolized
A. the still-troubled racial situation in the South. B. the rise of the Black Muslim movement in Los Angeles. C. a more militant and confrontational phase of the Civil Rights movement. D. the power of Martin Luther King in the black community. E. the ineffectiveness of the Voting Rights Act.
An example of a systemic poison is _____
A) Orthene B) Methyl bromide C) Rotenone D) Malathion
An advantage of open-drive compressors is that:
A) They are smaller and more compact than hermetic compressors. B) They are generally less expensive than comparable semihermetic compressors. C) They require no type of regular maintenance. D) The motor and compressor can be replaced separately.