用交流220V供电的洗墙灯属于哪类灯具，防触电保护等级内容是？
某厂总装机容量1200MW。2008年全年预计利用小时5800小时。该厂预计年发电量是（）万千瓦时。
A. 696000
B. 69600
C. 6960
D. 696
Which three statements about the Cisco MPLS TE Fast Reroute （FRR） process are true？（）
A. TE tunnels that are configured with the FRR option cannot be used as backup tunnels.
B. TE tunnels that are configured with the FRR option can be used as backup tunnels.
C. The backup tunnel that is used to protect a physical interface must have a valid IP address configured.
D. Interfaces must use MPLS global label allocation.
E. The source IP address of use backup tunnel and the merge point （MP） should not be reachable.
在苏丹标准目录印发前，各局可以中国国家标准或者《市场采购出口商品检验基本要求（试行）》作为判定依据。（）
A. 正确
B. 错误
微信支付 
支付宝支付