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) The 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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What is the hertz rating of an AC circuit if the frequency is 20 cycles per 1/2 second?
a. 10Hz b. 20Hz c. 30Hz d. 40Hz
Match each politician below with the Republican political faction with which he was associated. A. Roscoe Conkling 1. "Half-Breeds" B. James Blaine 2. Stalwarts C. Horace Greeley 3. Regular Republicans D. Ulysses Grant 4. Liberal Republicans
A. A-2, B-3, C-4, D-1 B. A-3, B-1, C-2, D-4 C. A-1, B-2, C-3, D-4 D. A-2, B-1, C-4, D-3 E. A-4, B-3, C-1, D-2
The ______ states produce the most corn and soybeans.
Fill in the blank(s) with the appropriate word(s).
When replacing U-joints, a special tool must be used to press onto both sides of the joint to sheer the plastic retainer
Indicate whether the statement is true or false