When a cutting job is completed and the oxyfuel equipment is no longer needed, the first step in shutting
down the oxyfuel cutting equipment is to _____.
a. close the fuel gas cylinder valve
b. back out the fuel gas and oxygen regulator adjusting screws
c. open the fuel gas torch valve
d. open the oxygen torch valve
a
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The major disadvantage of cutting with the wet saw is that _____ .
A. thin, delicate cuts are not possible B. the masonry unit becomes soaked with water C. it is much slower than dry cutting D. the dust problem is increased with wet cutting
El concreto verde recibe esta denominación por su _____.
a. uso b. color c. curado incompleto d. capacidad de moldeado
When welding, the practice metal is called a
a. shield c. leveler b. starter d. pad
When cutting open a soldered joint for testing, tiny bubbles are seen in the solder. What may have happened to cause this?
A) Too much solder was used. B) An insufficient amount of solder was used. C) The pipe was overheated. D) The pipe was under-heated.