食管癌病人出现持续胸背痛说明A．癌肿病变较大 B．癌肿部位有炎症 C．食管外组织已受

2014年2月8日，国家海洋局宣布，中国第四个南极科学考察站建成并投入使用，这个科学考察站是

A．黄河站

B．中山站

C．泰山站

D．昆仑站

细菌对氟喹诺酮类药耐药的机制是

A．产生灭活酶
B．染色体突变
C．改变细菌细胞膜通透性
D．细菌体内靶位结构改变
E．改变对代谢物的需要

检验微机保护装置数据采集系统应在什么状态下进行？

DOM is a platform and language - (66) 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 (67) DOM is a (68) -based API to documents, which requires the whole document to be represented in (69) while processing it. A simpler alternative to DOM is the event - based SAX, which can be used to process very large (70) documents that do not fit into the memory available for processing.

A．document

B．processor

C．disc

D．memory

E2202中管程介质为（）

A、锅炉水

B、中变气

C、原料气