Why should the technician check the furnace door safety switch after installation?
A) To test for furnace flashback
B) To prevent the furnace from operating with the door removed
C) To sync it with the indoor blower
D) To check the furnace interior for defects in the outgoing vents
B
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Answer the following statement(s) true (T) or false (F)
1.Dry-laid stone freestanding walls should be constructed with vertical sides. 2.Concrete can be pumped to sites that cannot be accessed by a concrete truck. 3.To achieve a special finish inside a cast-in-place concrete wall, special form liners can be installed before the pour. 4.Dry-laid stone freestanding walls should be constructed with vertical sides. 5.Concrete can be pumped to sites that cannot be accessed by a concrete truck.
Proposals that must be mailed rather than delivered personally must be visually attractive, easily interpreted, and ___________________
Fill in the blank(s) with correct word
The primary advantage of mechanical fittings over heat-bonded joints is that they _____
A) are much stronger B) are less likely to leak C) can be used on smaller sizes of tubing D) can be taken apart and reassembled more easily
Refer to the figure. Determine the c-c length of pipe N
Fill in the blank(s) with the appropriate word(s).