Which organizational pattern would probably be most effective for arranging the main points of a speech with the specific purpose "To inform my audience about the three major campaigns during the People's Liberation War in China"?
A.
analytical
B.
logistical
C.
topical
D.
technical
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参考答案:
举一反三
【简答题】图 3-18 所示电路中,已知 R 1 = 2K Ω , R f = 5K Ω , R 2 = 2K Ω , R 3 = 18K Ω , U i = 1V ,求 输出电压 U o 。