The increasing concentration of chemicals at the highest levels of an ecological pyramid is an example of ___________________________________
Fill in the blank(s) with correct word
biological magnification
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Leaks in air-conditioning systems must be repaired if they have an annual leak rate of:
A) 10 percent of the charge per year. B) 15 percent of the charge per year. C) 25 percent of the charge per year. D) 35 percent of the charge per year.
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Describe the two general types of AHU's
What will be an ideal response?
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What is the primary function of the spill valve actuator used in an E3 injector?
A. opens or closes the injector nozzle B. opens or closes the spill circuit C. vents and cools the injector D. blocks fuel to the nozzle assembly
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For a V-groove weld with backing, the width of the backing strips should be _____
a. 1/2" (13 mm) b. 1" (25 mm) c. 1-1/2" (38 mm) d. 2" (51 mm)
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