SIRS的诊断指标中，不包括（） A.体温>38℃或 B.心率>90次／分 C.pH

下列有关生态系统的叙述中，正确的是（　　）

A．生产者、消费者、分解者共同组成生态系统

B．一个池塘中所有的鱼可以组成一个生态系统

C．蝉→螳螂→黄雀三者形成一条食物链

D．在一定地域内，生物与环境所形成的统一整体叫做生态系统

患者，男，60岁，持续干咳二个月，偶有痰中带血丝，胸部正侧位X光片，显示右上叶不张，除普通细胞学检查外，还应首选哪项检查（）

A.经皮肺穿刺活检

B.纤维支气管镜检查

C.放射核素肺扫描检查

D.剖胸肺活检

E.纵隔镜检

当水样中总碱度浓度较低时，应如何操作以提高测定的精度？

维生素C有防止坏血病和动脉硬化，改善延缓疲劳状况，促进创伤愈合，预防癌症的功能。

DOM is a platform- and language- (65) 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 (66) . DOM is a (67) -based API to documents, which requires the whole document to be represented in (68) while processing it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large (69) documents that do not fit into the memory available for processing.

69（）

A.XML 

B.HTML 

C.script 

D.Web