令 F(x): x 是汽车, G( y): y 是火车, H(x, y): x 比 y 跑得快，则命题“有的汽车比有的火车跑得快”可符号化为： - 查题网

>> 成人高等教育 / 离散数学（上）

成人高等教育 / 离散数学（上）

正确率：100%

令 F(x): x 是汽车, G( y): y 是火车, H(x, y): x 比 y 跑得快，则命题“有的汽车比有的火车跑得快”可符号化为：

A、
$\exists$ x $\forall$ y(F(x) $\wedge$ G( y) $\wedge$ H(x, y))
B、
$\exists$ x $\exists$ y(F(x) $\wedge$ G( y) $\mapsto$ H(x, y))
C、
$\forall$ x $\exists$ y(F(x) $\wedge$ G( y) $\mapsto$ H(x, y))
D、
$\exists$ x $\exists$ y(F(x) $\wedge$ G( y) $\wedge$ H(x, y))

积分

离散数学（上）

参考答案：

点击查看答案

佳题速递：

题型描述: 十选项完形填空What do we mean by a perfect English pronunciation? In one sense there are as many different kinds of English as there are speakers of it. _ _ _ _ two speakers speak in exactly the same way. We can always hear differences _ _ _ _ them, and the pronunciation of English shifts a great deal in different geographical _ _ _ _ . How do we decide what sort of English to use as a model? This is not a question that can be _ _ _ _ in the same way for all foreign learners of English. _ _ _ _ you live in a part of the world like India or West Africa, where there is a long _ _ _ _ of speaking English for general communication purpose, you should tend to acquire a good _ _ _ _ of the pronunciation of this area. On the other hand, if you live in a country _ _ _ _ there is no traditional use of English, you must take as your model some form of native English pronunciation. It does not _ _ _ _ very much which form you choose. The most effective way is to take as your model the sort of English you can _ _ _ _ most often.1、 A. No B. None C. Nor D. Not 2、 A. between B. of C. among D. from 3、 A. areas B. parts C. countries D. spaces 4、 A. satisfied B. responded C. answered D. given 5、 A. If B. Whether C. Because D. When 6、 A. use B. habit C. tradition D. custom 7、 A. practice B. fashion C. method D. variety 8、 A. that B. what C. where D. which 9、 A. trouble B. affect C. care D. matter 10、 A. hear B. find C. notice D. listen统考英语B

检查GPS天线安装_____，四周应无建筑物或杂物遮挡；天线插头应接插可靠.牢固无松动，________应无破损断裂。( )A、应垂直馈线 B、应水平同轴电缆 C、65°信号线 D、45° 屏蔽线计算机控制系统

以下选项中，（）是不正确的 C 语言字符型常量。(A) 'a' (B) 'x41' (C) '101' (D) "a"C++程序设计

32、- Let me give you a lift（搭便车）. - _ _ _ _ _ _ _ _ _ I prefer to walk on such a lovely day. A.Thank you. B.No, thanks. C.You are welcome. D.No, you can't.统考英语交际英语

(单选题) According to the passage, which of the following statement is NOT true? A、Advertising can help us to know how people live in the past.B、The emotional approach focuses on the customers’ feelings while the rational approach concentrates on the products’ functionsC、What you buy should make others think highly of you.D、To some degree, TV commercials can help people make decisions.英语

中外合资经营企业的组织形式为（） (A)有限责任公司(B)股份有限公司(C)合作企业(D)两合公司[参考答案：A] 分值：2得分：分系统自动批改于2020年12月7日 15点06分经济法