下列情况属于多型现象的是（） A、蚜虫在同一季节里胎生雌蚜有无翅和有翅两个类型 。 B、黄蛱蝶的夏型和秋型 。 C、蚂蚁种群中的工蚁和兵蚁 。 D、锹甲的雌性和雄性存在形态差异。
You are configuring your computer to use both Windows 2000 Professional and Windows 98. Yourcomputer has three 8 GB hard disks: Disk 0, Disk 1, and Disk 2. You want to configure each hard disk to have an 8 GB partition. You want to install Windows 98 on Disk 0 and Windows 2000 Professional on Disk 1. You want to store your work files on Disk 2. You want to implement file level security on Disk 1. You want to be able to access your work file when using either operating system. What should you do? To answer, drag the correct file system from the File System Type area and drop the file system into the appropriate Partition type for reach hard disk.
施工项目的项目经理应由（）任命。 A.建设单位项目部 。 B.监理公司 。 C.施工企业法定代表人 。 D.施工企业董事会。
液压伺服系统具有以下特点（）。 压力高。 随动。 放大。 反馈。 偏差。
To take advantage of the capabilities of modern browsers that use web standards， such as XHTML andCSS， your web application is being converted from simple JSP pages to JSP Document format. However，one of your JSPs， /scripts/screenFunctions.jsp， generates a JavaScript file. This file is included in severalweb forms to create screen-specific validation functions and are included in these pages with the followingstatement： 10.<head> 11.<script src='/scripts/screenFunctions.jsp' 12.language='javascript' 13.type='application/javascript'> </script> 14.</head> 15.<!-- body of the web form --> Which JSP code snippet declares that this JSP Document is a JavaScript file？（） <%@ page contentType=’application/javascript’ %>。 <jsp:page contentType='application/javascript' />。 <jsp:document contentType='application/javascript' />。 <jsp:directive.page contentType='application/javascript' />。 No declaration is needed because the web form XHTML page already declares the MIME type of the /scripts/screenFunctions.jsp file in the <script> tag.
。
某工程实行总承包，则关于其工程文件的移交，下列做法中，符合国家有关规定的有（）
