Which of the following services is not offered by the federal government? In telephone or electric service, regulation is neces

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问题 Which of the following services is not offered by the federal government?
In telephone or electric service, regulation is necessary because______.

选项 A、in these areas monopoly has been established
B、these areas are faced with fierce competitions
C、these enterprises are inclined to make unfair security
D、these enterprises concern a lot with the public security

答案A

解析
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