2. 外语
  3. No one can be licensed as an electrician in Parker County without first completing a certain course in electrical safety procedu

No one can be licensed as an electrician in Parker County without first completing a certain course in electrical safety procedu

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问题 No one can be licensed as an electrician in Parker County without first completing a certain course in electrical safety procedures. All students majoring in computer technology at Parker County Technical College must complete that course before graduating. Therefore, any of the college’s graduates in computer technology can be licensed as an electrician in Parker County. The reasoning in the argument above is open to question because the argument has not established that
选项 A、everyone who has completed the course in electrical safety procedures is equally knowledgeable about such procedures.
B、all students majoring in computer technology who complete the course in electrical safety procedures at Parker County Technical College eventually graduate.
C、completion of a course in electrical safety procedures is all that is necessary for a person to be licensed as an electrician in Parker County.
D、the only way for a person to become knowledgeable about electrical safety procedures is to take a course in those procedures.
E、the only students at Parker County Technical College who are eligible to take the course in electrical safety procedures are students majoring in computer technology.
答案C
解析 本题的推理显然犯了把一个结论成立的必要条件与充分条件相混淆的错误，“complete thecourse in electrical safety procedure”只是“licensed as an electrician”的一个必要条件，而本题中的推理却把它当作一充分条件来使用。由此分析可知要使本题的结论成立，本题在辩论中还必须指出“修完《用电安全程序》这门课是被Parker郡批准成为电工的所必要的所有条件。”因此，(C)是正确答案。(A)、(B)、(D)和(E)都不能使充分条件成立，所以均为错误选项。
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