What problems are encountered in cutting aluminum, copper, and stainless steel?
What will be an ideal response?
These metals are nonferrous and don't react the same way as ferrous metal to oxygen.
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El riesgo de destello radiactivo se puede reducir usando _____.
a. gogles de seguridad con lentes correctamente ahumados b. un casco para soldadura con el visor hacia atrás c. materiales naturales, como lana o algodón d. mangas largas y abotonando la camisa hasta el cuello
A(n) ____________________ area is one in which the hazardous material is likely to be present.
Fill in the blank(s) with the appropriate word(s).
The number of squares of 1? x 8? drop siding (to the nearest square) required for a hip roof structure that is 40?
long and 25? wide with 10? high walls, fifteen 3? x 5? windows, one 8? x 7? garage door, and two 8? x 7? sliding doors is _____ squares. (Assume a waste allowance of 16%.) A) 7 B) 9 C) 11 D) 13
Which of the following statements about ammonia as a refrigerant is true?
a. Ammonia is slightly less efficient in heat transfer than halocarbon refrigerants. b. Ammonia costs more than other common refrigerants. c. Ammonia is poisonous and must be handled with extreme care. d. Ammonia piping cannot be constructed from copper.