为了保护动静脉内瘘，进行内瘘穿刺操作时注意事项正确的是：（） 选择好穿刺点。 采用阶梯式、纽扣式等方法，以合适的角度穿刺血管，先穿刺静脉、再穿刺动脉。 拔出动脉内瘘针后再拔静脉内瘘针，压迫穿刺部位2~3min。 弹力绷带压迫止血，松紧适宜。 嘱患者压迫15~30min后摘除止血带并观察有无出血。
You are using Windows 2000 Professional on your desktop computer. You are working on the company’s financial report and you want other users on the network to able to modify your documents for the report. You want users to share the financial report folder on the network. Because the network contains confidential information you want to prevent users from the enabling off line access for the network share that contains the financial report. What should you do？（） Use Windows Explorer to receive the offline files。 Using the Windows Explorer, disable the cache for the reports on the network share。 Use the Windows NT explorer to grant the special access for the reports on the network share。 Use the synchronization manager to configure synchronization not to occur when users are connected to the LAN connection.&e。
审定通过的农作物品种出现不可克服的严重缺陷等情形不宜继续推广、销售的，经（）审核确认后，由原公告部门发布公告，停止推广、销售。 原审定委员会。 上级审定委员会。 本级农业主管部门。 上级农业主管部门。
（）是结构主义的直接源头。 存在主义。 形式主义。 浪漫主义。 现实主义。
A router has been configured with the commands router eigrp 9 and network 72.16.1.0 0.0.0.255. No other EIGRP - related commands have been configured. The nswers list the IP addresses that could be assigned to this router's Fa0/0 interface. Which answers list an IP address/prefix length that would cause the router to enable IGRP on Fa0/0?（） 172.16.0.1/23。 172.16.1.1/26。 172.16.1.1/24。 172 .16.0.255/23。 None of the other answers is correct.。
钢结构焊接中，可以引弧的构件是（）。
