Most greenhouses are made of fiberglass or polyethylene
Indicate whether the statement is true or false
True
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?The hardened excretion of the lac bug has unique properties, and can be made into____.
A. ?horse bridles B. ?furniture C. ?combs D. ?coatings
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____ produce electricity by chemical action.
a. Batteries b. Solar cells c. Thermocouples d. Piezoelectric devices
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Troubleshooting Reach-In / Medium Temp - Diagnosis: Inefficient compressor (slightly)
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In a root pass, the penetration is controlled by using the correct torch travel speed and _____
A) work angle B) amperage C) voltage D) travel angle
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