我国规定合资企业的外方投资者的股权不低于（） ["30%","25%","20%","35%"]
D（）is one of the design features of human language which refers to the phenomenon that language consists of two levels: a lower level of meaningless individual sounds and a higher level of meaningful units.
电容器在直流稳态电路中相当于（），容量足够大时在交流电路中相当于（）。
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.
我国的市管县体制存在哪些问题？
