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问题 单项选择题

玻璃破碎探测器可分为以下三种类型：单技术型、声控/振动双技术型和（）。

A.微波/次声波双技术型

B.振动/次声波双技术型

C.声控/次声波双技术型

D.微波/振动双技术型

答案

参考答案：C

单项选择题

WLANs are increasingly popular because they enable cost-effective connections among people, 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 (166) to improve their efficienty and reduce (167) . 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 (168) 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 (169) 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 mananement by integrating with customers’ existing systems, such as OpenView and UniCenter. 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 (170) and administrative chores.

（168）是（）

A.finance

B.patient

C.affair

D.doctor
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单项选择题

软件测试的目的是______。

A．证明软件的正确性

B．尽可能多地发现软件系统中的错误

C．找出软件系统存在的所有错误

D．证明软件系统中存在错误
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