Which of the following advantages of optical communications is represented when the light in one glass fiber does not interfere with, nor is it susceptible to, the light in an adjacent fiber?
A. Elimination of crosstalk
B. Lower costs
C. Immunity to electrostatic interference
D. Lower signal attenuation
A
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Which of the following statements about converting a system from one refrigerant to another is correct?
a. Synthetic and mineral oils are fully compatible. b. A new metering device may be required. c. Equipment capacity must remain exactly the same. d. HCFCs can only be replaced by another HCFC.
What are the three categories that make up the chemical industry? Give an example for each category.
What will be an ideal response?
Recently, some historians have argued that the New Deal had a more radical effect on men than women for all of the following reasons EXCEPT
A. Social Security was designed to assist male breadwinners, who were expected to share benefits with their families. B. married women were rarely favored for jobs in New Deal agencies. C. social and economic programs of the New Deal maintained or reaffirmed women's traditional roles as wives or mothers. D. social and economic programs of the New Deal tended to provide more opportunities to men than women. E. many men were required to assume significant child rearing responsibility because of the millions of women who went to work for New Deal agencies.
How many times must the ignition switch be cycled to put a Chrysler computer in self-test mode?
A) Two B) Eight C) One D) Five