The addition of large quantities of plant residues to the soil generally ________ the incidence and severity of soil-borne plant diseases
A) increases B) has no effect on C) reduces
C
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Most manual plasma arc cutting speeds are around ____ in. per minute. Any faster and it would be difficult for you to accurately follow the line.
A. 10 B. 14 C. 18 D. 20
At welded elbows, insulation should _____.
a. stop before the weld b. stop after the weld c. cover one-half the width of the weld d. cover all of the weld
Which of the following demonstrated the persistent racial divide in America during the 1990s?
A. the contrasting attitudes of whites and African Americans to the “not guilty” verdict in the O.J. Simpson murder case B. the outbreak of the Los Angeles riots following the acquittal of white police officers who had been videotaped viciously beating a black suspect C. America's segmented and separate residential patterns with minorities making up majorities within many American cities and whites dominating the suburbs D. massive partisan differences among black and white voters with African Americans and other minorities becoming more consequential parts of the Democratic base and whites gravitating increasingly to the Republicans E. All of these choices are correct.
The __________ is the conductor used to connect the system grounded conductor to a grounding electrode.
a. grounding electrode conductor b. grounding conductor c. neutral conductor d. service conductor