一个语言FOL可以没有谓词。（）
一个语言FOL可以没有谓词。（）
In winter, some people energy by lowing the heat at night.
In winter, some people energy by lowing the heat at night.
如果P和Q是FOL语句，那么（）也是。
如果P和Q是FOL语句，那么（）也是。
Weshould（）thenationalflagwhenthesunsets. A: lower B: lowed C: lowing D: lowers
Weshould（）thenationalflagwhenthesunsets. A: lower B: lowed C: lowing D: lowers
In the distance _____ the lowing of the cattle. A: there heard B: was there heard C: there was heard D: was it heard
In the distance _____ the lowing of the cattle. A: there heard B: was there heard C: there was heard D: was it heard
在一阶逻辑的语言FOL中，每个个体常项必须命名一个实际存在的对象。
在一阶逻辑的语言FOL中，每个个体常项必须命名一个实际存在的对象。
When checking students’understanding of a certain language point in class，which of the fol-lowing utterances is a teacher expected to make A: “Is it okay” B: “Is it clear to you” C: “Are you clear” D: “Is it all fight to everyone”
When checking students’understanding of a certain language point in class，which of the fol-lowing utterances is a teacher expected to make A: “Is it okay” B: “Is it clear to you” C: “Are you clear” D: “Is it all fight to everyone”
Software Engineering Economy is an effective part of software engineering, which of the fol-lowing content is the research content of software engineering economy ( ) Ⅰ．Estimation of software development cost Ⅱ．Earn & Cost analysis of software development Ⅲ．Adjustment of software development progress A: Ⅲ only B: Ⅱ and Ⅲ C: Ⅰ and Ⅱ D: all
Software Engineering Economy is an effective part of software engineering, which of the fol-lowing content is the research content of software engineering economy ( ) Ⅰ．Estimation of software development cost Ⅱ．Earn & Cost analysis of software development Ⅲ．Adjustment of software development progress A: Ⅲ only B: Ⅱ and Ⅲ C: Ⅰ and Ⅱ D: all