Describe the three zones of a lake. What are their characteristics?
What will be an ideal response?
? Littoral zone—the shallow zone that contains rooted vegetation.
? Limnetic zone—goes from where the rooted vegetation no longer occurs to where light stops penetrating.
? Profundal zone—the bottom zone of the lake, essentially no light penetrates
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____ is the current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
a. Ampacity b. Resistance c. Voltage d. Power
The three parts of a service call are _____.
a. writing a service ticket, servicing, and submitting a bill b. technical competence, cleanliness, and speed of service c. unloading tools, fixing equipment, and repacking tools d. opening, service, and closing
The most popular secondary fluid currently used in refrigeration systems is ____.
A. HFE B. ethylene glycol C. HCFC D. propylene glycol
CAD technicians who perform quantity takeoffs are called upon to determine the ____ of steel reinforcing bars needed for the project.
A. linear feet B. cubic tons C. total number D. tensile strength