单项选择题 速动比率是着重反映项目何种能力的指标（）。

单项选择题 In the "host to host" layer of the DOD model, which of the following is a valid connection oriented protocol?（）

多项选择题 IfyouchooseTypicalSettings，whichofthefollowingconfigurationsaremadeduringtheNetworkSettingscomponentoftheWindows2000Professionalinstallation？（）