?GMAW power supplies are ____ type machines.
A. ?constant-current and constant-voltage
B. ?constant-voltage and constant-potential
C. ?drooping arc voltage and constant-current
D. ?constant-current and constant-potential
Answer: B
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All metals have the ability to have their properties altered by some form of heat treatment.
Answer the following statement true (T) or false (F)
The plantation system of the Cotton South before the Civil War
A. resembled a tightly controlled oligarchy in its monopolistic features. B. became more democratic and open to newcomers. C. was very financially stable over many years. D. was attractive to European immigrants. E. included no expectation that planter aristocrats had any obligation to serve the public as politicians or statesmen.
A material that readily and actively absorbs water is considered _____.
a. hygroscopic b. anhydrous c. a hydrocarbon d. saturated
La sección 230.70 del NEC® exige que los medios de desconexión del servicio sean accesibles y estén situados en:
a. el exterior. b. en el exterior o en el interior. c. el interior. d. un área de servicio aparte.