A single -ply roof membrane is made of polymers (plastics), which are available in two types. Give the names of the polymers and the differences between them.
What will be an ideal response?
Polymers are of two types: thermoplastic and thermosetting. Thermoplastic polymers become soft on heating and
hard on cooling a on reversible basis, much like butter or asphalt. Thermosetting polymers do not have that
ability?like an egg, which if it becomes hard, cannot become soft again.
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Some common tying materials for budding and grafting include: ________, ________, ________, and ________.
Fill in the blank(s) with the appropriate word(s).
Two structural steel design methods discussed in this chapter are the ASD and LRFD methods. What do the letters ASD and LRFD stand for?
What will be an ideal response?
Which of the following could cause this condition?
A walk-in with TEV is 10° too warm and has the following conditions: ? Subcooling is 10° ? Superheat is 10° a. Dirty condenser b. Restriction in the liquid line c. Overcharge d. Undercharge
Erasing or programming a flash memory device is a one step operation
Indicate whether the statement is true or false