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问题 单项选择题

关于对房产投资客户的理财建议说法错误的是（）。

A.降低房地产投资的现金比例，增加开放式基金组合投资、本币理财产品的合理配置，提高金融资产的比例，增强家庭整体资产的流动性

B.房地产投资已起到了保值增值效用，不需再购买保险产品增强家庭风险保障

C.通过各种融资新产品的使用，减低房产投资成本，扩大融资渠道，解决房产投资过程中的各种融资问题

D.利用个人网银、电话银行、金穗通短信服务等金融服务产品，为经常性的还款资金往来提供便利

答案

参考答案：B

单项选择题

In looking at the class structure of an entire system, we may find that its inheritance (1) is either wide and shallow, narrow and deep, or balanced. Class structures that are wide and shallow usually represent forests of (2) classes that can be mixed and matched. Class structures that are narrow and deep represent trees of classes that are related by a common ancestor. There are advantages and disadvantages to each approach. Forests of classes are more loosely (3) , but they may not exploit all the commonality that exists. Trees of classes exploit this commonality, so that individual classes are smaller than in forests. However, to understand a particular class, it is usually necessary to understand the meaning of all the classes it inherits from or uses. The proper shape of a class structure is highly problem-dependent.
We must make similar trade-offs among inheritance, aggregation, and using relation- ships. For example, should the class Car inherit, contain, or use the classes named Engine and Wheel In this case, we suggest that an (4) relationship is more appropriate than inheritance relationship. Meyer states that between the class A and B," (5) is appropriate if every instance of B may also be viewed as an instance of A. The client relationship is appropriate when every instance of B simply possesses one or more attributes of A". From another perspective, if the behavior of an object is more than the sum of its individual parts, then creating an aggregation relationship rather than an inheritance relationship between the appropriate classes is probably superior.

(5)

A．aggregation

B．inheritance

C．association

D．using
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单项选择题

NBDP通信中，船台向岸台发出业务指令BRK+是表示（）

A、船台与岸台通信结束，即拆线

B、船台与用户通信结束，即拆线

C、船台发完一份电报的结束

D、电台与用户建立通信
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