13.
What is the technique called when the holes on a new sheet of
metal are drilled from inside the structure?
______.
A
Hole finding.
______.
B
Templating.
______.
C
Pilot drilling.
______.
D
Back drilling.
14.
Which type of sealant should you use on an area where the seal
is seldom broken?
______.
A
Rubber.
______.
B
Sealing compound.
______.
C
Special seals.
______.
D
Metal seals.
15.
How many degrees Fahrenheit should you apply to help speed up
the curing of sealants?
______.
A
No more than 120.
______.
B
140.
______.
C
150.
______.
D
160.
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