What type of systems normally use crankcase pressure regulators?

A) Commercial refrigeration applications with evaporator temperatures above 40°F
B) Any refrigeration system with a compressor that has a positive-pressure oil pump
C) Primarily comfort cooling applications
D) Low-temperature refrigeration applications such as walk-in and reach-in freezers


D

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What is a potentially important use of the daily diary that is not related to the crew leader's efficient management of work?

a. Documenting work completed b. Recording an OSHA inspection visit c. Scheduling a new-worker orientation session d. A source of information during litigation with the client

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What makes an estimate at times more accurate than at other times?

What will be an ideal response?

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Phosphorus availability in acid soils is constrained by the presence of significant quantities of reactive ________

A) boron B) sulfur C) iron D) calcium E) magnesium

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The unit for measuring electrical resistance is _____.

A. amperes B. ohms C. volts D. watts

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