The two air flow patterns for cooling towers are ____________________ and counterflow.
Fill in the blank(s) with the appropriate word(s).
crossflow
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Calculate the approximate distance between the following points.
1. A point at 45° north latitude, 20° west longitude and a point 30° north latitude, 20° west longitude. 2. A point at 50° north latitude, 80° west longitude and a point at 50° north latitude, 20° west longitude. 3. A point at 10° north latitude, 80° west longitude and a point at 10° north latitude, 20° west longitude. 4. A point at 72° north latitude, 28° west longitude and a point at 18° north latitude, 28° west longitude and a point at 18° north latitude, 42° west longitude. 5. A point at 22° south latitude, 65° west longitude and point at 22° south latitude, 79° west longitude.
What is the purpose of a hand-off-automatic circuit?
What will be an ideal response?
A ____________________ is a piece of grass shoot
Fill in the blank(s) with correct word
Which of the following features increases overall efficiency to between 83% and 89%?
A) sealed combustion chamber B) flame-retention burner C) barometric damper D) aquastat controller