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问题 问答题 简答题

影响磨损速度的主要因素有哪些

答案

参考答案：

①烟气、物料的流速

②烟气中物料的浓度粒度及硬度

③被磨损的元件的表面形状、硬度

④物料与被磨损元件的相对运动方向影响最大的是气流的速度，磨损与速度的三次方成正比。

单项选择题

WLANs are increasingly popular because they enable cost-effective connections amongpeople, applications and data that were not possible, or not cost-effective, in the past.For example, WLAN-based applications can enable fine-grained management of supply and distribution ___24___ to improve their efficiency and reduce ___25___. WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care applications to reduce errors and improve overall ___26___ care.WLAN management solutions provide a variety of other benefits that can be substantial but difficult to measure. For example, they can protect corporate data by preventing ___27___ through rogue access points. They help control salary costs, by allowing IT staffs to manage larger networks without adding staff. And they can improve overall network management by integrating with customers’ existing systems, such as OpenView. Fortunately, it isn’t necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time-consuming ___28___ and administrative chores.

28（）

A.exploitation 

B.connection 

C.department 

D.deployment
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问答题

【说明】
建立企业的Internet时，经常遇到的问题是：IP地址的申请、网络安全、网站的建立和维护，请就这些问题进行回答。

【问题1】
当我们申请不到很多合法IP时，如何分配IP使得单位对外开放的服务器和内部的 PC终端能够上网
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