ggplot2中的前缀gg表示什么？
A: grammar of group
B: graphic of group
C: graphic of grammar
D: grammar of graphic
A: grammar of group
B: graphic of group
C: graphic of grammar
D: grammar of graphic
举一反三
- The weekly radio program is on ______. A: a group of graphic artists B: the Board of Directors C: a designers’ committee
- A context-free grammar G consists of four parts: a group of nonterminals, a group of terminals, a start symbol, and a group of (). A: sentence B: sentence pattern C: word D: Production
- Grammar can be divided into four types: Type 0, type 1, type 2 and type 3. The type 3 grammar is ( ). A: Phrasal grammar B: Regular grammar C: Context-sensitive grammar D: Context-free grammar
- Grammar can be divided into four types: Type 0, type 1, type 2 and type 3. The 0-type grammar is (). A: Phrasal grammar B: Regular grammar C: Context -sensitive grammar D: Context -free grammar
- Chomsky divides grammar into four types, namely type 0, type 1, type 2, and type 3. The type 3 grammar is( )。 A: Unrestricted<br/>grammar B: Regular<br/>grammar C: Context-sensitive grammar D: Context-free grammar