Author Question: Shielding gas for GTAW most often is: A) CO2 B) 100 helium C) 100 argon D) 75 argon, 25 ... (Read 138 times)

ahriuashd · **on:** Jul 26, 2018

Shielding gas for GTAW most often is:

A) CO2 B) 100 helium
C) 100 argon D) 75 argon, 25 CO2

Question 2

A mechanical seal that has one seal inside the stuffing box and one seal outside the stuffing box is known as a
_____
seal.

a. single inside mechanical
b. face-to-face mechanical
c. back-to-back mechanical
d. tandem