Prior to the development of chemical herbicides, ____________________ were used to work weeds out from around crops planted in rows
Fill in the blank(s) with correct word
hoes
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____ roofing systems utilize reflective white membranes and ballast, white metal, or paints and coatings.
A. Cool B. Metal C. Built-up D. Low-slope
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If the timing chain or belt skips or breaks, pistons and valves collide, often resulting in major engine damage. This engine is MOST-Likely to be a(n):
A. freewheeling engine B. noninterference engine C. interference engine D. production engine
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When a sawtooth wave is applied to a differentiator op amp, the output is a(n) __________.
A. inverted and amplified sawtooth B. square wave C. sine wave
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The heating load is ____ of heat flow from the building to the outside air.
a. a rate b. the quantity c. the cost d. one unit
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