What is correct definition of a liquid?
A. Anything that has weight and mass and occupies space.
B. A substance that has definite volume and sufficient mechanical strength to maintain a constant shape.
C. A substance that has neither definite volume nor definite shape.
D. A substance that has definite volume but does not have definite shapes.
Answer: D
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Various Web sites post jobs and publish information about careers in biotechnology. Find three Web sites that provide biotechnology career information. (Examples of such Web sites are Access Excellence, Biospace, Biofi nd, Science Jobs, and Bio-Link.) Prepare a table that lists and describes the three Web sites you have selected. For each, fi nd an actual job title or career description and describe the educational qualifi cations each one requires.
What will be an ideal response?
Technician A says that worn valve guides can cause excess oil consumption. Technician B says that valve guides can be measured with a dial bore gauge. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Which of the following is a disadvantage of spur gearsets?
A. produce high thrust forces B. noise C. torque losses D. costly to manufacture
What is galvanized iron pipe?
A) Galvanized iron pipe is dipped in zinc to make it resistant to corrosion. B) Galvanized iron pipe is simply another name for steel pipe. C) Galvanized iron pipe has an outer Teflon coating to help it resist corrosion. D) Galvanized iron pipe has been treated to prevent galvanic corrosion.