Which of the following is a correct statement regarding the selection and/or connection of shielding-gas
cylinders to the welding equipment?
a. The shielding gas selection is not important; all of the available gases do an equal job in all welding
applications.
b. Remove the cylinder?s protective cap, momentarily crack the cylinder valve open to blow out any dirt,
and then close it.
c. Install the regulator/flowmeter assembly first, then crack the cylinder valve open to blow out any dirt and
debris.
d. When using argon as a shielding gas, special precautions and respirators are required due to its toxicity.
b
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