The correct lighting procedure for an oxyacetylene torch is:
A) Crack the acetylene and light it first, then add the oxygen.
B) Crack the oxygen and light it first, then add the acetylene.
C) Fully open both the acetylene and oxygen, wait 30 seconds, and then light the mixture.
D) Crack both the acetylene and oxygen and light the mixture.
A
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a. True b. False Indicate whether the statement is true or false
The _____________________________ is used to help technicians perform a number of tasks including taking pressure readings on the high side of the system and trapping all of the system refrigerant in the receiver to perform system service.
Fill in the blank(s) with the appropriate word(s).
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A. Umbrella B. Positive C. O-ring D. A-ring
____ are the main support members of stairs.
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