The typical shielding gas for GTAW on deoxidized copper that is over 1/8" (3.2 mm) thick is _____
a. helium
b. hydrogen
c. oxygen
d. argon
a
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All life on earth depends on the growth of plants
Indicate whether the statement is true or false
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In an electrical circuit, amps are:
A) One coulomb of electrons flowing in one second. B) Opposition to the flow of electricity. C) The ability to make current flow. D) The ability of electricity to do work.
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When entering a confined space:
A) You should wear clothes that are resistant to spontaneous arcing. B) You should take a radio or cell phone for emergency calls in case you pass out. C) Another worker should be posted outside the confined space. D) You should leave a note at the entry point.
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The symbol 
stands for ____________________.
Fill in the blank(s) with the appropriate word(s).
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