如何查看R中已经安装的所有软件包的信息？
A: install.packages()
B: library(package)
C: installed.packages()
D: package.list()
A: install.packages()
B: library(package)
C: installed.packages()
D: package.list()
举一反三
- 如何获得R语言中安装的所有软件包的列表？ A: installed.packages() B: install.packages() C: installed() D: packages()
- Which of the following does not belong to DfE packages A: Minimal package B: Returnable package C: Recyclable package D: One-time package
- Which two statements about packages are true?() A: Packages can be nested B: You can pass parameters to packages C: A package is loaded into memory each time it is invoked D: The contents of packages can be shared by many applications E: You can achieve information hiding by making package constructs private
- Upon arrival of the goods at the port of destination,we found that nearly 20% of the_____had been broken, obviously attributed to improper_____. A: packages,packing B: packet.packages C: packing,packages D: package, packing
- R中，利用什么命令可以加载已经安装的fun包？ A: library(fun) B: install.packages("fun") C: remove.packages("fun") D: required(fun)