离心泵转子与壳体有（）次定心 ["1","2","3","4"]
设置插入到网页的flash动画背景透明的参数为（）
酶分子表面化学修饰中错误的是（） ["通过非共价键将大分子连接到酶分子的表面","通过共价键将大分子连接到酶分子的表面","PEG是常用的修饰剂","常见修饰方法有戊二醛法叠氮法琥珀酸法等","在实际的化学修饰过程中多采用单甲氧基聚乙二醇的衍生物"]
下列单据中，只有（）才可用来结汇。 ["装货单","铁路运单正本","收货单","铁路运单副本"]
Your network contains an Active Directory domain. The domain contains a Windows Server Update Services (WSUS) server named Server1. A Group Policy object (GPO) named GPO1 configures all computers in the domain to use Server1 for Windows Update.You add a new Windows 7 computer named Computer1 to the domain.From the Update Services console, you discover that Computer1 is not listed as a member of any computer groups.You verify that GPO1 is applied to Computer1.You need to ensure that Computer1 is available in the Update Services console. What should you do？（） [" On Computer1, run wuauclt.exe \/detectnow."," On Computer1, run wuauclt.exe \/reportnow."," On Server1, run wsusutil.exe reset."," On Server1, run wsusutil.exe listinactiveapprovals."]
简述性格类型中的“场依存性与场独立型”行为特征
