[单选] 可用下列（）滤镜弥补对扫描的图象不够清晰缺陷。

快照是指（） 一个存储的图案。 一个存储的遮罩。 一个存储的选区。 一个存储的历史记录。 现金股利 某网站禁止百度蜘蛛索引所有网页，以下robots.txt文件正确的是：（） {User-agent：BaiduspiderDisallow：}。 {User-agent：BaiduspiderAllow：*}。 {User-agent：BaiduspiderAllow：/}。 {User-agent：BaiduspiderDisallow：/}。 Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 (SP2). The primary group for all users is Domain Users. You share a folder named Data. The shared folder is located on a server named Server1. A user in the Research group named User1 reports that she cannot access files in the Data shared folder. You verify that User1 is not listed in the access control list of the shared folder. You examine the properties of the User1 account. The properties are shown in the exhibit. (Click the Exhibit button.) Other members of the Research group can add and modify files in the Data shared folder. You need to ensure that User1 can access files in the Data shared folder. What should you do? （） Remove User1 from the IT group.。 Assign the Change permission to User1.。 Remove User1 from the Domain Users group.。 Add User1 to the Server Operators group on Server1.。 对于有气体参与反应的酶，通常采用（）反应器 填充床式。 流化床。 鼓泡式。 搅拌罐式。 可用下列（）滤镜弥补对扫描的图象不够清晰缺陷。