An industry rule-of-thumb concerning airflow is that there should be what CFM of airflow per ton across the evaporator?
A) 400 B) 100 C) 200 D) 1000
A
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Investigate current designs for one or more of the items listed below. If you do not have the items in your possession, purchase them or borrow from friends. Conduct the following “reverse engineering” procedures on each of the items:
(a) Write down the need that the design satisfies. (b) Disassemble the item and list all the parts by name. (c) Write down the function of each of the parts in the item. (d) Reassemble the item. (e) Write down answers to the following questions: ? Does the item satisfactorily solve the need you stated in part (a)? ? What are the strengths of the design? ? What are the weaknesses of the design? ? Can this design be easily modified to solve other needs? If so, what needs and what modifications should be made? ? What other designs can solve the stated need? The items for your study are the following: ? smartphone ? disposable camera ? flashlight ? calculator ? printer
?When plastics pieces are dissolved in a volatile solvent in casting, hardening occurs as a result of _____.
A. ?catalysts B. ?added heat C. ?solvent evaporation D. ?high pressure
All of the following statements about wheel rims are true EXCEPT:
A. A wheel rim with negative offset has the center of the tire positioned inboard from the vertical wheel mounting surface B. Wheel rims must position the tires at the proper distance inward or outward from the vertical wheel mounting surface C. A wheel rim with positive offset has the center of the tire positioned outboard from the vertical wheel mounting surface D. A wheel rim with negative offset has the center of the tire positioned outboard from the vertical wheel mounting surface
If carbon monoxide is a product of a reaction resulting in combustion, what can be said about the combustion?
A) The integration process did not occur. B) The combustion was incomplete. C) The integration process was incomplete. D) The combustion was complete.