党员或者党员领导干部在其职责范围内，不履行或者不正确履行自己的职责，对造成的损失或者后果起决定性作用的，应当负（）。 直接责任。 主要领导责任。 重要领导责任。
关于一人公司，以下说法正确的有（） 只有一个自然人股东。 可以在公司登记中注明公司是一人独资公司，也可以在营业执照中标明。 一人公司的财务会计报告，必须经过会计事务所依法进行审计。 一个自然人最多只能设立两个一人有限责任公司。
You are the administrator of a Windows 2000 Professional computer， which has a 56 Kbps modem， connected to itself. You want the users on your company’s network to be able to connect to the Internet using your computer. But， you do not want to allow any other operations than HTTP and FTP. Which ports will you allow through this connection？ （） Port 80。 Port 21。 Port 25。 Port 81。
Refer to the network of Layer 3 switches in the exhibit. The RPI Multi cast Server only multicasts to hosts connected to multilayer switches 5 and 6. The CMU Multicast Server multicasts to hosts on multilayer switches 1 - 6. Given the number of configuration steps involved, what is the most efficient way to configure the net work while meeting the requirements for multicast data flow? （） Configure each switch with PIM sparse mode and a separate instance of PIM dense mode.Specify switch 1 as the root for the RPI Multicast Server. Specify switch 2 as the root for the CMU Multicast Server.。 Configure each switch with PIM sparse mode and a separate instance of PIM dense mode. Leave each multicast server as the root of its own multicast tree.。 Configure each switch with PIM sparse - dense mode. Configure switch 3 as a ren dezvous point for the RPI multicast stream.。 Configure each switch with PIM sparse mode and a separate instance of PIM dense mode.Allow the switches to elect their own root for each multicast tree.。 Configure each switch with PIM sparse mode.。 Configure each switch with PIM dense mode.。
城市快速路的设计使用年限为（）年。 A、20 。 B、5 。 C、15 。 D、10。
What is the maximum data rate specified by the IEEE 802.11B standard for wireless LANS?（）
