站用变绕组外部绝缘应清洁,无破损、无变形、无发热和树枝状放电痕迹,绑扎紧固完整,相间隔板应完整并固定牢固。
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站用变铁心与上下夹件、钢拉带、压板、底脚板间均应保持良好绝缘,应至少一点可靠接地,金属结构件应一点可靠接地。
A. 正确
B. 错误
You are the network administrator for Company. A user named Marie uses a Windows 2000 Professional computer named ES1 to process payroll records. You want to prevent ES1 from being able to communicate with any Windows NT Workstation 4.0, Windows 98 and Windows 95 computers on the network. You also want ES1 to communicate only with other Windows 2000 computers. What should you do?()
A. Close all NetBIOS ports in the Advanced TCP/IP options of ES1.
B. Disable the Access this computer from network policy in the local security policy settings for ES1.
C. Import the Securews.inf security template to ES1.
D. Import the Hisecws.inf security template to ES1.
E. Clear all WINS client settings on ES1.
珠光体耐热钢与低碳钢焊接时,由于这两类钢的热物理性能差异不大,故焊接性良好,均可采用与它们()相对应的焊接材料,但是采用()焊接材料,焊后在相同的热处理条件下焊接接头具有较高的冲击韧性。