Agriculture is the most important of all the sciences because we depend on it for
What will be an ideal response?
food
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All successful salespeople are ____________________ about their products
Fill in the blank(s) with correct word
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Why do water and refrigerant flow in opposite directions in tube-in-tube condensers?
A) To decrease pressure B) To increase pressure C) To decrease efficiency D) To increase efficiency
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How do mixing valves save energy?
A) by reusing loop water for domestic hot water B) by maintaining a hot loop regardless of outdoor temperature C) by mixing costly boiler water with inexpensive domestic hot water D) by delivering only enough heat to the loop to meet the load
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When soldering copper pipe, the wire solder should be touched to the pipe surface once the flux starts to _____
A) melt B) cool C) bubble D) harden
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