[单选] 根据索赔目的可分为（）和费用索赔。

常用来可靠切断煤气来源的方式有（）。 闸阀、蝶阀。 NK阀、水封阀。 阀门与盲板并用。 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。 南北朝骈体文学成就最高的作家是（） 庾信。 鲍照。 孔稚珪。 江淹。 为了保证产出高于投入，我们必须注意（） 提高培训和开发的效率。 重视全员的开发和培训。 进行适度与适当的培训和开发。 做好预决算工作及其评估工作。 根据索赔目的可分为（）和费用索赔。