Do not make exaggerated claims about the products you are trying to promote.
Focus your advertising campaign on vague analogies and veiled implications instead of on facts.
Do not use facts in your advertising that will strain the prospective clients ability to believe.
Do not assume in your advertising that the prospective clients know even the most elementary scientific principles.
Concentrate your advertising firmly on financially relevant issues such as price discounts and efficiency of operation.
21. The passage suggests that heat pumps would be used more widely if
they could also be used as air conditioners
they could be moved around to supply heat where it is most needed
their heat output could be thermostatically controlled
models with truly superior cooling capacity were advertised more effectively
people appreciated the role of the evaporator in the energy equation
22. According to the passage, the role of the flow restriction in a heat pump is to
measure accurately the flow rate of the refrigerant mass at that point
compress and heat the refrigerant vapor
bring about the evaporation and cooling of refrigerant
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