不停电工作系指:1)工作本身不需要停电并且_____偶然触及导电部分的危险;2)_____在带电设备外壳上或导电部分上进行的工作。
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初步核算,中国2012年全年城镇新增就业1113万人,年末城镇登记失业率为4.2%,以上年末提高0.2个百分点。以上的数据表明()。
A. 城镇登记失业人数占城镇从业人数和城镇登记失业人数之和的4.2%
B. 失业人数占全体具有劳动能力人数的4.2%
C. 中国劳动力人口中失业人口占4.2%
D. 城镇失业人口占总人口的4.2%
三维MRA成像的错误叙述是()
A. 三维图像质量对梯度场要求很高
B. 防止涡流故双极梯度场施加时间很短
C. 要有强的静磁场和窄的脉冲
D. 梯度线圈要保证上升和降落时间最短
E. 要有足够的梯度场强,克服B0的不均匀
预拉波形伸缩器时,其拉伸偏差不得大于()mm。
A. 5
B. 10
C. 15
D. 20
Your companys network includes an Active Directory Domain Services (AD DS) domain. You manage Hyper-V servers by using Microsoft System Center Virtual Machine Manager (VMM) 2008 R2. You install Windows Server 2008 R2 Datacenter (Server Core Installation) on 100 new servers, and you add the servers to the domain. You need to add the Hyper-V role to the 100 new servers. You must accomplish this goal by using the least amount of administrative effort. What should you do?()
A. Run the Add-WindowsFeature RSAT-Hyper-V PowerShell cmdlet.
B. In Server Manager, use the Add Roles Wizard to add the Hyper-V role.
C. In the VMM Administrator Console, use the Add Hosts Wizard to individually add each new server to VM
D. In the VMM Administrator Console, use the Add Hosts Wizard to simultaneously add all 100 new servers to VM