中国皇帝最早知道世界五大洲地理位置的时期在（）。 宋末元初。 元末明初。 明末清初。 清末时期。
抗精神病药物阻断肾上腺素能受体后，可产生以下效应（） 可产生镇静作用。 直立性低血压。 性功能减退。 心动过速。 射精延迟等副作用。
Your network has 1，000 client computers that run Windows XP. You are planning to deploy Windows 7. You plan to use the Microsoft Deployment Toolkit Lite Touch Installation deployment method to deploy the Windows 7 image. You have the following requirements： Migrate 20 computers at a time. Ensure that you conserve network bandwidth. You need to design a deployment strategy that meets the requirements. What should you do？（） Configure multicast transmission on the deployment point.。 Configure unicast transmission on the deployment point.。 Compress the contents of the distribution folder.。 Distribute the image by using Background Intelligent Transfer Service （BITS）.。
土石坝坝顶常设混凝土或浆砌石防浪墙，防浪墙的高度一般为（）m。 0.5～0.7。 0.8～1.0。 1.0～1.2。 1.2～1.4。
Which statement is true about the class of an object that can reference the variable base？（） It can be any class.。 No class has access to base.。 The class must belong to the geometry package.。 The class must be a subclass of the class Hypotenuse.。
What is the Flush Input Buffer setting used for in the Input tab of the Menu step?（）
