A(n) ____ forms when the melted snow refreezes as it runs to an uninsulated eave.

A. snow melt
B. ice dam
C. air leak
D. ridge dam


Answer: B

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Assume that for a given consumer, the marginal utility of cheap food is 100 and the price of cheap food is $40. Also, assume that the marginal utility of environmental quality is 200 and the price of environmental quality is $100. This consumer:

A) Should buy more environmental quality. B) Is in equilibrium. C) Should buy more cheap food. D) Can't tell; insufficient information given to answer this question.

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The strength of a brazed joint stems from the _____.

a. length of the tubing b. large clearance gap c. ability of the filler metal to penetrate d. use of propane

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If large amounts of ice are forming on a low temperature evaporator, what could possibly be the problem?

A. defective evaporator fan motor B. defective hot gas defrost solenoid valve C. defective condenser fan motor D. both a and b

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Approximately how many Btus does it take to change one pound of 212 degree water into one pound of 212 degree steam?

A. 16 B. 144 C. 180 D. 970

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