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问题 单项选择题

伴肾上腺性变态综合征的皮质增生临床病理特点（）

A.患者多为中老年女性

B.皮质网状带增生为主

C.肾上腺皮质增生细胞主要为亮细胞

D.肾上腺髓质萎缩

E.常伴肾上腺出血、坏死

答案

参考答案：B

解析：网状带增生为主的肾上腺皮质增生临床表现为肾上腺－生殖器综合征，女性者男性化，男性者性早熟。镜下皮质网状带增厚。

单项选择题

(71) analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the (72) for designing and constructing an improved system. (73) is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called (74) . (75) is another such technique that integrates data and process concerns into constructs called objects.

（74）处填（）。

A．PERT

B．DFD

C．ERD

D．UML
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单项选择题

活塞式压缩机活塞包括的基本结构型式，以下说法错误的是（）。

A.组合式

B.级差式

C.柱塞

D.耐压式
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