题目内容

最容易形成卡特尔的市场结构是（）

A. 垄断
B. 完全竞争
C. 寡头垄断
D. 垄断竞争

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DOM is a platform and language- (51) API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents (currently, definitions for HTML and XML documents are part of the specification). The document can be further processed and the results of that processing can be incorporated back into the presented (52) . DOM is a (53) -based API to documents, which requires the whole document to be represented in (54) while processing it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large (55) documents that do not fit info the memory available for processing. （54）是（）

A. document
B. processor
C. disc
D. memory

经济当中存在紧缩缺口的情况是（）

A. 出现政府财政预算赤字
B. 总需求水平超过充分就业收入水平
C. 在收入达到充分就业水平的情况下，漏出超过注入
D. 总需求水平低于充分就业收入水平

最容易形成价格歧视的市场结构是（）

A. 垄断
B. 完全竞争
C. 寡头垄断
D. 垄断竞争

征收关税可能出现的结果是（）

A. 进口商品价格和数量都下降
B. 进口商品价格上涨，数量下降
C. 进口商品价格下降，数量上升
D. 进口商品价格和数量都上升