搜题请搜索小程序“爱下问搜题”
问题 填空题

聚合硫酸铁又称聚铁，化学式为[Fe2(OH)n(SO4)3-0.5n]m，广泛用于污水处理。实验室利用硫酸厂烧渣(主要成分为铁的氧化物及少量FeS、SiO2等)制备聚铁和绿矾(FeSO4·7H2O)，过程如下：

验证固体W焙烧后产生的气体含有SO2的方法是（）。

答案

参考答案：将气体通入品红溶液，溶液褪色，加热恢复原色

多项选择题

甲、乙合作开发完成一项发明，但双方未就专利申请权相关事项作任何约定。根据《合同法》的规定，下列关于该项发明的专利申请权的表述中，正确的有()。

A.对该项发明申请专利的权利属于甲乙共有

B.如果甲放弃其专利申请权，乙可以单独申请

C.如果甲不同意申请专利，乙可以自行申请

D.如果甲准备转让其专利申请权，乙在同等条件下有优先受让的权利
查看答案
单项选择题

Starting with his review of Skinner’s Verbal Behavior, Noam Chomsky had led the psycholinguists who argue that man has developed an innate (天生的) capacity for dealing with the linguistic universals common to all languages. Experience and learning then provide only information about the (1) instances of those universal aspects of language which are needed to communicate with other people within a particular language (2) .

This linguistic approach (3) the view that language is built upon learned associations between words. What is learned is not strings of words per se (本身), but (4) rules that enable a speaker to (5) an infinite variety of novel sentences. (6) single words are learned as concepts: they do not stand in a one-to-one (7) with the particular thing signified, but (8) all members of a general class.

This view of the innate aspect of language learning is at first not readily (9) into existing psychological frameworks and (10) a challenge that has stimulated much thought and new research directions. Chomsky argues that a precondition for language development is the existence of certain principles "intrinsic (原有的) to the mind" that provide invariant structures (11) perceiving, learning and thinking. Language (12) all of these processes; thus its study (13) our theories of knowledge in general.

Basic to this model of language is the notion that a child’s learning of language is a kind of theory (14) . It’s thought to be accomplished (15) explicit instruction, (16) of intelligence level, at an early age when he is not capable of other complex (17) or motor achievements, and with relatively little reliable data to go on. (18) , the child constructs a theory of an ideal language which has broad (19) power. Chomsky argues that all children could not develop the same basic theory (20) it not for the innate existence of properties of mental organization which limit the possible properties of languages.

13（）

A. tunes into

B. sheds light on

C. leaves behind

D. sets forth
查看答案