What are the differences between adiabatic heating and thermal heating as applied to extruders and why are both important?
What will be an ideal response?
Adiabatic heating is caused by the mechanical action of the screw on the resin inside the extruder. Thermal heating is caused by the heaters that surround the extruder barrel. Both are important because they combine to give the internal energy needed for melting. Some especially thermal-sensitive polymers cannot tolerate much thermal heating
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Technician A says solvent-soaked towels may need to be stored in an airtight container. Technician B says floor dry should be disposed of in the same container used for contaminated towels. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B
Once the structure design has been completed, surveying methods are used to lay out the _____.
a. building lines b. floor plan c. water lines d. elevations
The members of the family Heleophrynidae are commonly called ____________________ frogs
Fill in the blank(s) with correct word
What units are used to measure pressure in HVACR systems?
What will be an ideal response?