There are no check valves or extra metering devices on most water-source packaged units because
A) most water-source packaged units use suction line accumulators and charge compensators.
B) its heat exchangers are most often made of copper, cupronickel, or stainless steel.
C) water-source packaged units have a much lower operating temperature range than air-source units.
D) most water-source packaged units use a single bi-flow thermostatic expansion valve.
D
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The founding of the American colonies by the British was
A. accomplished in a well-planned fashion. B. based on the high-minded aspirations of groups such as the Puritans and the Quakers. C. undertaken by the government in every case. D. undertaken in a haphazard manner. E. rarely undertaken by trading companies or religious groups.
Building codes divide the types of construction into
A) Types I to VI. B) Types 1 to 5. C) Types I to V. D) Types 1 to 6. E) none of the above.
Which of the following is not an erosion-control technique for Class III land?
A) terracing B) fertilization C) crop rotations D) cover cropping
Determine the reaction of the structure in P3.2.
