The most popular gases for heating, cutting, and welding metals are ____________________ and
____________________.
Fill in the blank(s) with the appropriate word(s).
propane, acetylene
acetylene, propane
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An improperly made GMAW restart will create a(n) _____
a. bead overlap b. weave bead c. stringer bead d. weld discontinuity
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How can water source heat pumps help reduce domestic hot water cost?
What will be an ideal response?
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Why are split-system installation valves typically NOT used following installation?
A) They do not control flow to service ports. B) They are usually stuck in the closed position. C) They limit flow to the service ports. D) They are usually stuck in the open position.
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The two types of ____________________ motors are the single-field compensated motor and the two-field compensated motor.
Fill in the blank(s) with the appropriate word(s).
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