A finished Pittsburgh seam between two pieces of sheet metal has the advantage of _____.
a. slipping for ease of disassembly
b. resisting expansion and contraction
c. providing pre-fabricated holes for screws or rivets
d. joining sheet metal pieces without screws or rivets
d. joining sheet metal pieces without screws or rivets
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?In many industries, ____ must be able to pass a performance test to specific code or standard.
A. ?the welding engineer, the welder, and the welding operator B. ?the welding engineer, the welding inspector, and the welding shop owner C. ?the welder, the welding operator, and the tack welder D. ?the welding operator, the tack welder, and the welder's helper
Which of these is the heating element used to ignite the gas-generating material, usually sodium azide?
A) Squib B) Pretensioner C) Element D) Coil
The largest source of electric power in the U.S. is
a. solar b. natural gas c. nuclear d. coal e. hydroelectric f. wind
The stratum clock hierarchy defines how ________ the timing source is
Fill in the blank(s) with correct word