On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.
举一反三
- 名词：a meeting between heads of government._________.
- 名词：a meeting between heads of government._________.（10.0分）
- 国外开放存取数据库系统包括（open access libr...gh wire press）和（
- The purpose of education is to replace an empty mind with an open one. — Malcolm Forbes
- 中国大学MOOC: 国外开放存取数据库系统包括（open access library）、（opendoar）、（doaj）、（high wire press）和（ ）