主要根据氢键吸附原理分离物质的方法是()A.膜分离法 B.聚酰胺色谱法 C.硅胶柱色

题型:单项选择题

问题:

主要根据氢键吸附原理分离物质的方法是()

A.膜分离法

B.聚酰胺色谱法

C.硅胶柱色谱法

D.离子交换树脂法

E.分馏法

考点:执业中药师中药化学成分与药效物质基础中药化学成分与药效物质基础题库
题型:单项选择题

人类专门去揭示事物的这种内在的本质属性和规律性的心理活动,是认识过程的核心,称为()

A.知觉

B.记忆

C.思维

D.想象

E.注意

题型:单项选择题

DOM is a platform- and language- () 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 () . DOM is a () -based API to documents, which requires the whole document to be represented in () while processing it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large () documents that do not fit into the memory available for processing.

which requires the whole document to be represented in () while processing it.

A.document

B.processor

C.disc

D.memory

题型:单项选择题

下列表述中不属于《中华人民共和国建筑法》规定内容的是( )。

A.建设单位应当自领取施工许可证之日起3个月内开工,因故不能按期开工的,应当向发证机关申请延期

B.工程监理人员认为工程施工不符合工程设计要求、施工技术标准和合同约定的,有权要求建筑施工企业改正

C.监理工程师应当按照工程监理规范的要求,采取旁站、巡视和平行检验等形式,对建设工程实施监理

D.设计单位对设计文件选用的建筑材料、建筑构配件和设备,不得指定生产厂、供应商

题型:单项选择题

安全色的含义是什么?

题型:单项选择题

跟踪出站调车,最远不得越出站界多少?。

更多题库