国务院环境保护行政主管部门根据国家声环境()和国家经济、技术条件,制定国家环境声排放 发布时间:2019-02-12 04:30 │ 来源:www.tikuol.com 题型:单项选择题 问题: 国务院环境保护行政主管部门根据国家声环境()和国家经济、技术条件,制定国家环境声排放标准。A.污染标准B.排放标准C.质量标准D.排放法规
题型:单项选择题 SOX is an alternative (71) for XML. It is useful for reading and creating XML content in a (72) editor. It is then easily transformed into proper XML. SOX was created because developers can spend a great deal of time with raw XML. For many of us, the popular XML (73) have not reached a point where their tree views, tables and forms can completely substitute for the underlying (74) language. This is not surprising when one considers that developers still use a text view, albeit enhanced, for editing other languages such as Java. SOX uses (75) to represent the structure of an XML document, which eliminates the need for closing tags and a number of quoting devices. The result is surprisingly clear.(71)处填()。A.syntaxB.grammarC.semanticD.pragmatics 查看答案
题型:单项选择题 针对三相异步电动机起动的特点,采用Y-△换接起动可减小起动电流和起动转矩,下列说法中正确的是()。A.Yr连接的电动机采用Y-△换接起动,起动电流和起动转矩都是直接起动的1/3B.Y连接的电动机采用Y-△换接起动,起动电流是直接起动的1/3,起动转矩是直接起动的C.△连接的电动机采用Y-△换接起动,起动电流是直接起动的,起动转矩是直接起动的1/3D.△连接的电动机采用Y-△换接起动,起动电流和起动转矩都是直接起动的1/3 查看答案