心源性休克病人心率慢宜选用哪种药物治疗（） A.低分子右旋糖酐 B.酚妥拉明 C.多

脱囊的临床特征下列哪一项不正确：

A．阴囊红肿

B．迅速坏死

C．睾丸暴露

D．发热恶寒

E．好发于中青年男性

Prior to the availability of enterprise EDM, locating a document over a LAN could be difficult, and over a WAN (1) nearly impossible. With the model for collaborative work spreading, and with more users sharing (2) documents through e-mail and the Internet, enterprise EDM had become a necessity.

Many businesses are finding their greatest competitive advantage is the ability to harness the document (3) lifecycle. EDM systems manage this lifecycle from creation, revision, storage and (4) retrieval to routing and workflow. They also allow users to work on documents collaboratively.

Reusability of information is EDM’s main benefit, as well as the key to creating the paradigms that drive business process (5) reengineering.

5（）

A．messages

B．packets

C．information

D．reengineering

如图是反射弧结构模式图，回答下列问题．

（1）a 是感受器，作用是______．

（2）若此图表示人看到酸杏分泌唾液，则感受器a 指眼睛的______； c 是位于脑干的唾液分泌神经中枢；效应器e 则是唾液腺．视神经b从功能上看，属于______神经；从发生部位上看属于脑神经．

（3）若此图表示学生听到铃声走进教室，则感受器a 指耳的耳蜗； c 是位于大脑的听觉中枢和______中枢；效应器e 则是指完成行走动作的有关肌肉．

（4）若此图表示缩手反射，感受器a位于皮肤内，神经中枢c 位于______，效应器e 则是肱二头肌（和支配它的传出神经末梢）．

（5）人跑步时，心跳加快，呼吸加快，这是非条件反射，此神经中枢位于______．

实验员甲在糕点水分测定恒重时恒重3次重量一次为20.5327g、20.5306g、20.5310g，则计算时应选用（）作为计算数据

A.20.5327

B.20.5306

C.20.5310

D.取3次平均值

绘制车站平面示意图时应注意哪些事项？