Before swinging a sledgehammer, _____.
a. be sure the nonstriking face is clean
b. be sure everyone is clear
c. position your legs 4 feet to 5 feet apart
d. put on heavy gloves
Answer: B
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What type of boilers work at higher operating pressures?
A) Fire tube B) Straw tube C) Water tube D) Steam tube
What is the radius of a circle whose circumference is 54' 6"? Use 
= 3.1416 and round to the nearest inch.
Fill in the blank(s) with the appropriate word(s).
How would you determine the costs for a project using the square-foot method and in-house cost data?
What will be an ideal response?
The law of conservation of matter states that:
A) Only "green" matter should be used for installing HVACR systems. B) An equal amount of matter is always created somewhere whenever matter is destroyed. C) Matter should not be wasted. D) Matter cannot be created or destroyed.