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根据如下所示的UML类图可知，类Car和类Boat中的move（）方法。

若对表1按（）进行运算，可能得到表2.

图(a)所示是某一个时刻J1、J2、J3、J4 四个作业在内存中的分配情况，若此时操作系统先为J5 分配5KB 空间，接着又为J6 分配10KB 空间，那么操作系统采用分区管理中的（）算法，使得分配内存后的情况如图(b)所示。

系统中有R 类资源m 个，现有n 个进程互斥使用。若每个进程对R 资源的最大需求为w，那么当m、n、 w 取下表的值时，对于表中的a-e 五种情况，（）可能会发生死锁。

某工程计划图示如下，各个作业所需的天数如下表所列，设该工程从第0 天开工，则作业I最迟应在第（）天开工。
 

下图标出了某地区的运输网：
从节点①到节点⑥的最大运输能力（流量）可以达到（）万吨/小时。

某公司的销售收入状态如下表所示，该公司达到盈亏平衡点时的销售收入是（）百万元人民币）。

某公司需要根据下一年度宏观经济的增长趋势预测决定投资策略。宏观经济增长趋势有不景气、不变和景气3种，投资策略有积极、稳健和保守3种，各种状态的收益如下表所示。基于maxmin悲观准则的最佳决策是（）。

在UML的通用机制中，（）用于把元素组织成组；（）是系统中遵从一组接口规范且付诸实现的物理的、可替换的软件模块。

在UML的通用机制中，（）用于把元素组织成组；（）是系统中遵从一组接口规范且付诸实现的物理的、可替换的软件模块。

回调（Call back）函数是面向过程的程序设计语言中常用的一种机制，而设计模式中的（）模式就是回调机制的一个面向对象的替代品。该模式的意图是（）。

为了直观地分析系统的动作，从特定的视点出发推述系统的行为，需要采用动态分析的方法。其中（）本来是表达异步系统的控制规则的图形表示方法，现在已经广泛地应用于硬件与软件系统的开发中，它适用于描述与分析相互独立、协同操作的处理系统，也就是并发执行的处理系统。（）是描述系统的状态如何响应外部的信号进行推移的一种图形表示。

假设普通音频电话线路支持的频率范围为300Hz～3300Hz，信噪比为30dB，则该线路的带宽B 是（）Hz，根据信息论原理，工作在该线路上的调制解调器最高速率V 约为（）kbps。 （注：V=B*log2（（S/N）+1），S 是信号强度，N 是噪声强度）

关系R（A，B，C，D）和S（B，C，D）进行笛卡尔运算，其结果集为（）元关系。三个实体及它们之间的多对多联系至少应转换成（）个关系模式。

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 （） to improve their efficienty and reduce （） . 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 （）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（）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 pav for themselves simolv by minimizinu time-consunlina（）and administrative chores.

假设普通音频电话线路支持的频率范围为300Hz～3300Hz，信噪比为30dB，则该线路的带宽B 是（）Hz，根据信息论原理，工作在该线路上的调制解调器最高速率V 约为（）kbps。 （注：V=B*log2（（S/N）+1），S 是信号强度，N 是噪声强度）

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks．These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points．in allowing this open access for third parties, LANs become（）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to （） activity. For many organizations,however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns．Employees with malicious intent can launch（）of service attacks or steal （）information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （） and worms acquired from unprotected public networks．Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

回调（Call back）函数是面向过程的程序设计语言中常用的一种机制，而设计模式中的（）模式就是回调机制的一个面向对象的替代品。该模式的意图是（）。

为了直观地分析系统的动作，从特定的视点出发推述系统的行为，需要采用动态分析的方法。其中（）本来是表达异步系统的控制规则的图形表示方法，现在已经广泛地应用于硬件与软件系统的开发中，它适用于描述与分析相互独立、协同操作的处理系统，也就是并发执行的处理系统。（）是描述系统的状态如何响应外部的信号进行推移的一种图形表示。

关系R（A，B，C，D）和S（B，C，D）进行笛卡尔运算，其结果集为（）元关系。三个实体及它们之间的多对多联系至少应转换成（）个关系模式。

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 （） to improve their efficienty and reduce （） . 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 （）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（）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 pav for themselves simolv by minimizinu time-consunlina（）and administrative chores.

若某航空公司的飞机订票系统有n 个订票终端，系统为每个订票终端创建一个售票终端的进程。假设Pi（i=1，2，…，n）表示售票终端的进程，Hj（j=1，2，…，m）表示公共数据区，分别存放各个航班的现存票数，Temp 为工作单元。系统初始化时将信号量S 赋值为（）。Pi进程的工作流程如下，a、b 和c 处将执行P 操作和V 操作，则图中a、b 和c 应填入（）

若某航空公司的飞机订票系统有n 个订票终端，系统为每个订票终端创建一个售票终端的进程。假设Pi（i=1，2，…，n）表示售票终端的进程，Hj（j=1，2，…，m）表示公共数据区，分别存放各个航班的现存票数，Temp 为工作单元。系统初始化时将信号量S 赋值为（）。Pi进程的工作流程如下，a、b 和c 处将执行P 操作和V 操作，则图中a、b 和c 应填入（）

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks．These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points．in allowing this open access for third parties, LANs become（）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to （） activity. For many organizations,however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns．Employees with malicious intent can launch（）of service attacks or steal （）information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （） and worms acquired from unprotected public networks．Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

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 （） to improve their efficienty and reduce （） . 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 （）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（）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 pav for themselves simolv by minimizinu time-consunlina（）and administrative chores.

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 （） to improve their efficienty and reduce （） . 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 （）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（）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 pav for themselves simolv by minimizinu time-consunlina（）and administrative chores.

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks．These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points．in allowing this open access for third parties, LANs become（）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to （） activity. For many organizations,however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns．Employees with malicious intent can launch（）of service attacks or steal （）information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （） and worms acquired from unprotected public networks．Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

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 （） to improve their efficienty and reduce （） . 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 （）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（）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 pav for themselves simolv by minimizinu time-consunlina（）and administrative chores.

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks．These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points．in allowing this open access for third parties, LANs become（）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to （） activity. For many organizations,however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns．Employees with malicious intent can launch（）of service attacks or steal （）information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （） and worms acquired from unprotected public networks．Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks．These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points．in allowing this open access for third parties, LANs become（）. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to （） activity. For many organizations,however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns．Employees with malicious intent can launch（）of service attacks or steal （）information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with （） and worms acquired from unprotected public networks．Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.