有的P是M,所有S是M,所以有的S是P"这个三段论的逻辑错误是
试例示具有下列命题形式和推理形式的命题或推理.
1.所有S都不是P。
2.要么r,要么s。
3.如果p,那么q;非q;所以非p。
4.所有M都是P,S都是M,所以S都是P。
Goods are carried by several of transport--on road or rail, by sea or air.
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
2002年新配方口服补液盐(ORS)溶液的张力是
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