Compared to centrifugal chillers, screw chillers generally:
A) Are physically larger for comparable capacity.
B) Operate at lower compression ratios.
C) Are arranged in multiple stages to improve compression ratio.
D) Are physically smaller for comparable capacity.
D
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When selecting a subcontractor for the different pieces of work, the contractor must balance scopes and be able to compare quote to quote, known as scope alignment.
Answer the following statement true (T) or false (F)
The Landrace breed originated in which country?
A. China B. England C. Denmark D. United States
A primary advantage of using J-K flip-flops in asynchronous counter circuits is their ability to:
A) toggle on the clock if the J-K inputs are held HIGH. B) toggle on the clock if the J-K inputs are held LOW. C) toggle on the clock if the PRESET and CLEAR inputs are held HIGH. D) toggle on the clock if the PRESET and CLEAR inputs are held LOW.
The water circuit in shell and coil and coil-type tube-in-a-tube condensers must be cleaned ____.
A. by removing the end caps B. with a brush C. chemically D. by air pressure