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问题 填空题

正常人每分钟的______与心率相同，若心率为60次/分，则心动周期是______．

答案

脉搏即动脉搏动，随着心脏有节律性的收缩和舒张，动脉管壁相应的出现扩张和回缩，在体表浅动脉上可触到搏动．心率是指心脏在单位时间（1分钟）内跳动的次数，即心脏每分钟跳动的次数． 正常人每分钟的脉搏与与心率相同，若心率为60次/分，即心脏每分钟跳动60次，心动周期是指心脏跳动一次需要的时间．因此心动周期═1分÷60═1秒．

故答案为：脉搏；1秒．

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 (1) to improve their efficiency and reduce (2) . 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 (3) care. WLAN management solutions provide a variety of other benefits can be substantial but difficult to measure. For example, they can protect corporate data by preventing (4) 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 Open View 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 (5) and administrative chores.

3（）

A．finance

B．patient

C．affair

D．doctor
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简答题

观察下列漫画,回答问题:

漫画中左边的这一队能够取得拔河比赛的胜利吗?为什么?
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