搜题请搜索小程序“爱下问搜题”
问题 多项选择题

根据2002年ATS和ERS发布的关于间质性肺炎的诊断和治疗共识，不属于IIP的是（）。

A.急性间质性肺炎

B.淋巴细胞性间质性肺炎

C.结节病

D.普通性间质性肺炎

E.外源性变应性肺泡炎

答案

参考答案：C, E

选择题

以长为13cm、10cm、5cm、7cm的四条线段中的三条线段为边，可以画出三角形的个数是（　）

A.1个

B.2个

C.3个

D.4个
查看答案
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
查看答案