Assume a single-zone constant-volume system with an economizer is installed. In the occupied mode, when the thermostat calls for cooling, which of the following occurs?

a. The supply air fan stops.
b. The outdoor dampers move to fully closed.
c. The economizer acts as the first stage of cooling, if conditions permit.
d. The relief fan cycles on.


c. The economizer acts as the first stage of cooling, if conditions permit.

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Nitrogen immobilization usually occurs when low nitrogen materials are turned into the soil and rapid

decay depletes nitrogen in the root zone.

Indicate whether the statement is true or false.

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Planting border crops is used in ____________________

Fill in the blank(s) with correct word

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Pet-oriented child psychotherapy is designed to

A. Demonstrate improvements in communication, self-esteem, and interest in other activities B. Increase self-respect, independence, and confidence C. Help bolster morale and optimism D. A and B above E. All of the above

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Which of these statements is true regarding scrub radius?

A) It can be measured B) It cannot be adjusted C) Both A and B D) Neither A nor B

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