启用停用（）年以上的锅炉，使用单位应当按照国家规定进行检验，检验合格后，方可继续使用。 ["半年","1","2","3"]
Langue refers to the a（）linguistic system shared by all the members of a speech community while the parole is the concrete use of the conventions and application of the rules.
把乙炔钢瓶放在操作时有电弧火花发生的实验室里。
Chomsky defines “competence” as the ideal user’s k（）of the rules of his language.
中国城市管理体制有何特点？
应收款项的审计目标是什么？
