In TIG welding, thoriated tungsten electrodes are used, because it ___

1.	In TIG welding, thoriated tungsten electrodes are used, because it ____________________?
A.	Has higher current carrying capacity
B.	Has better electron emissivity
C.	Is stronger than ordinary tungsten
D.	Is easy to prepare
Answer» C. Is stronger than ordinary tungsten

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In TIG welding, thoriated tungsten electrodes are used, because it ____________________?

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