羊水栓塞一般不出现的病理生理改变是（）。

[单选题]The de facto standard Application Program Interface (API) for TCP/IP applications is the “sockets” interface. Although this API was developed for （71） in the early 1960s it has also been implemented on a wide variety of no-Unix systems. TCP/IP （72） Written using the sockets API have in the past enjoyed a high degree of portability and we would like the same （73） with IPv6 applications. But changes are required to the sockets API to support IPv6 and this memo describes these changes. These include a new socket address structure to carry IPv6 （74） ,new address conversion functions, and some new socket options. These extensions are designed to provide access to the basic IPv6 features requited by TCP and UDP applications, including multicasting, while introducing a minimums of change into the system and providing complete （75） for existing IPv4 applications.

[单选题]有关医院感染的描述，错误的是（）

[问答题](1)计算A、B两个项目的预期收益率和收益率的标准离差率（保留两位小数）。

[单选题]郁证气郁化火证的选方为（）

[单选题]肺部急性炎症的主要病理变化为（）

[单选题]计算机联锁车站进行辅助改变运行方向时，需在（）倒计时间内重复点击发车辅助按钮。

[单选题]申请补发批交易D09文件的时限是（）

[单选题]在基层地方自治中，主张“团体自治”的国家是（）

[多选题]我国现行企业绩效评价指标体系中反映企业经营增长状况的指标有（　　）。

[单选题]乳腺数字摄影X线机摄影系统用平板探测器代替（　　）。