Passive solar water heaters have no moving parts
Indicate whether the statement is true or false
FALSE
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A handheld power unit that can be used for cutting threads, driving hoists and winches, and operating large valves, is the _____.
a. beveler b. portable power drive c. nibbler d. cutoff machine
Biological controls require more time and attention to establish and see their effects than chemical controls; however, once established, many biological controls remain effective year after year
Indicate whether the statement is true or false
A fuel injection system that does not use a sensor to measure the amount (or mass) of air entering the engine is usually called a(an) type of system
A) Hot wire B) Mass air flow C) Air vane controlled D) Speed density
A ____ is a brace used to provide support for the rafters as they span between the ridge and the wall.
A. fascia B. strong back C. bottom chord D. purlin