Which of the following types of sewage treatment are properly matched?
A. primary-physical process
B. secondary-physical process
C. primary-biological process
D. secondary-chemical process
E. primary-chemical process
Answer: A
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Which of the following materials is most likely to undergo oxidation?
A. Na B. Na+ C. Cl2 D. Cl- E. both A and B
Elements bond together to form molecules because they ____
A)are most stable when their outer electron shell is filled B)need to have a positive charge C)need to have a negative charge D)are glued together by protons E)are pulled by electromagnetic forces
The area surrounding a service from which customers are attracted is the
A) hinterland. B) range. C) threshold. D) median. E) meridian
Serum is obtained by removing which of the following from plasma?
A) albumin B) fibrinogen C) globulin D) hemoglobin