Evacuated tube collectors consists of numerous sealed glass tubes attached to a common top pipe called a _____ .
A. ?central heat pipe?
B. ?vaporizer?
C. ?manifold?
D. ?heat exchanger?
Answer: C
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When carrying plywood or other sheet material on a windy day, you should _____.
a. carry it over your head b. carry it so the edge of the sheet points to the wind c. make sure the veneer side is facing into the wind d. carry it so any flat surface faces into the wind
The two most important types of budding for woody ornamentals and fruit trees are: ________ and ________.
Fill in the blank(s) with the appropriate word(s).
____ is a potential source of ignition that you should recognize.
A. AC current B. Spontaneous combustion C. Carbon dioxide D. Carbon monoxide
What do unsatisfactory products lead to?
A. Increase in customers B. Decreased waste C. Decreased costs D. Reduced profits