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选言证明
xuǎn yán zhèng míng
运用选言直言推理所作的证明。间接证明的一种。以论题为一个选言支,构造一个穷尽该问题一切可能的选言判断,并断定除该选言支外,其他选言支都是假的,从而断定论题是真的。如为了证明电灯突然熄灭是因为灯泡坏了,可以构造选言判断如下:“电灯突然熄灭,或者是因为停电,或者是因为保险丝烧断,或者是因为线路发生故障,或者是因为灯泡坏了。”然后根据事实断定前三个选言支为假,从而断定论题是真的。
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barrier nursing
barrier-nursing
barriero
Barriero
barrier of blood vessels
barrier of efficiency
barrier of gastric mucosa
barrier of infection
barrier of intestinal mucosa
barrier of race and religion
barrier of speech
barrier of speech barrier
barrier of tariff
barrier on a high-way
barrier option
barrier options
barrier optlon
barrier package
barrier packaging
barrier packing
barrier paper
barrier parameter
barrier part
barrier-passageway
barrier patrol
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更新时间:2024/12/25 13:07:10