白化病是由于缺乏（）

[单选题]运行中应始终将吸收塔内的浆液密度保持在（）kg/m3左右。

[填空题]退思园的园主人名为（）。

[多选题]You are the network administrator for TestKing. The network consists of a single Active Directory domain. A member server named Testking1 runs Windows Server 2003 and Software Update Services (SUS). You perform a full backup of Testking1 every night. Testking1 fails unexpectedly and cannot be restarted. As a result, automatic updates are no longer distributed within the domain. You need to restore the functionality of Testking1. First, you install Windows Server 2003 on a new computer and configure it as a member server. You name the new computer Testking1 and install all IIS components that were installed on the original Testking1. Then you install SUS and obtain the most recent successful backup of the original Testking1. Which two additional actions should you perform?（） (Each correct answer presents part of the solution. Choose two.)

[单选题]某鱼贩以每千克2元的成本从水库运来鲜鱼500千克到早市销售。若他面临的需求曲线为Q=1000－100P，为求利润最大，他应销出（）。

[名词解释题]生产时间和劳动时间

[问答题]在机车上或靠近机车工作时应注意什么？

[单选题]下列关于工程保险的表述，错误的是（）。

[问答题]生成SATWE数据时，形成各层构件信息-形成第4层数据，弹出“查找墙的右边界失败，ID=139”？

[单选题]广告文案的主要文字结构有标题、（）、（）、随文 。

[问答题]商业社会职能的内容？