输液中发生肺水肿时，需用20%~30%的酒精湿化吸氧，其目的是（） 使患者呼吸道湿润。 使痰液稀薄，宜咳出。 消毒吸入的氧气。 降低肺泡表面张力。 降低肺泡泡沫表面张力。
Exhibit: You are the administrator of Company.com's network. Company.com has recently upgraded its network to a 100 Mbps standard. And all Windows 2000 Professional computers in Company's main office has been upgraded with new 10/100 Mbps network interface card (NIC). All computers have been configured with TCP/IP protocol settings so that IP and DNS settings are obtained automatically from a DHCP services server. A user has reported that he cannot access the network. You view the network adapters node in Device Manager as shown in the Device Manager window. See exhibit. You want this computer to communicate on the network using the least amount of administrative effort. What should you do?（） Configure IP address settings manually.。 Replace the network adapter。 Disable TCP/IP filtering for all network adapters.。 Enable the network adapter.。 Enable IEEE 802.1x authenticatio。
汽油发动机怠速运转正常，中、高速抖动，有时出现共振现象，此故障极有可能是（）。 个别汽缸不工作。 混合气过浓。 某发动机固定螺栓松动。 混合气过稀。
以下项目中正确的说法是（）。 算术均数用于近似正态分布的资料。 几何均数用于对数后呈偏态分布的资料。 标准误是用于描述一组观察值离散程度大小的指标。 标准差是描述样本均数与总体均数之间离散程度或抽样误差大小的指标。
简述流媒体技术的主要应用场合。
监理工程师对施工质量的检查与验收，必须是在承包单位（）的基础上进行。
