综合安全管理制度中，______应包括生产经营单位定期安全分析会议，定期安全学习制度，定期安全活动，定期安全检查等内容。

A．安全生产责任制
B．安全管理定期例行工作制度
C．安全设施和费用管理制度
D．应急管理制度

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.

A．XML

B．HTML

C．script

D．web