Plastics are often classified into two categories:
a. foams and vinyls
b. thermoplastics and thermosets
c. flexible and rigid
d. transparent and opaque
b. thermoplastics and thermosets
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Miyoko has 630 acres of cotton. She treated the soil with 2.3 pints per acre of an herbicide for weed control. The herbicide comes in 21/ /2 -gallon containers at $108.45 per container.
a. How many fluid ounces of the herbicide were applied per acre? b. How many containers of the herbicide were purchased? c. What was the cost of the herbicide?
In what year were genetically engineered crops first introduced?
a. 1991 c. 1996 b. 1993 d. 1998
In industrial applications, alternators are driven by various types of ____________________.
Fill in the blank(s) with the appropriate word(s).
What do all post-2007 diesel particulate filters (DPFs) require periodically?
A. Filter replacement. B. Bench testing to meet EPA standards. C. Service intervention to remove ash residues. D. Pressure testing to check for leaks.