Critical services are running on CKD20， a domain controller. You have completed restructuring the organizational unit hierarchy for the domain and deleted the needless objects. What would you do to perform an offline defragmentation of the Active Directory database on CKD20 while ensuring that the critical services remain online（） Open the Microsoft Management Console （MMC） and stop the Domain Controller service. After that，run the defrag tool。 Start the domain controller in the Directory Service restore mode and run the Ntdsutil tool。 Start the domain controller and then use the Defrag tool to start defragmentation。 Open the MMC and stop the Domain Controller service. After that， run the Ntdsutil tool.。 All of the above。
乳糖酶可以催化乳糖水解生成（） 二个半乳糖。 葡萄糖和果糖。 葡萄糖和半乳糖。 半乳糖和果糖。 二个葡萄糖。
电压的单位是（） 欧姆；。 安培；。 伏特。
习得得无助感
省委、省政府《关于进一步加强安全生产工作的意见》提出建立安全隐患排查治理长效机制的具体内容有哪些？
急性毒性是（）
