This metal, known as sterling, is alloyed with 8 to 10 percent copper for use in jewelry and coins and household items and is 925/1000 pure.

a. gold
b. silver
c. platinum
d. titanium


b. silver

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Cuando se colocan grapas a un revestimiento ASJ sobre trabajos en frío _____.

a. se deben pintar con masilla tipo barrera de vapor b. se debe colocar cinta sobre ellas c. se debe poner más grapas que para trabajos en caliente d. se debe poner menos grapas que para trabajos en caliente

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When does the owner receive manufacturers' warranties from the GC?

A) At substantial completion inspection B) Within one week of the GC receiving warranties from the respective manufacturer or subcontractor C) At final completion inspection D) None of the above

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The United States uses which of the following standard systems of wire sizes?

a. Manufacturer’s Gauge b. Manufacturer’s Foundation c. American Wire Gauge d. International Electrotechnical Commission

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In some companies the safety and health manager might be a person who has other duties.