The metal _______, which has a melting point of over 3000 C, is used to make light bulb filaments.
a.
tungsten
b.
mercury
c.
gold
d.
iron
The metal tungsten , which has a melting point of over 3000?C, is used to make light bulb filaments.
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Asked 6/12/2014 8:11:21 AM
Updated 6/12/2014 10:12:04 AM
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