搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A1/A2型题

可呈"哑铃"状生长的纵隔肿瘤是（）

A.胸腺瘤

B.气管囊肿

C.心包囊肿

D.神经源肿瘤

E.淋巴瘤

答案

参考答案：D

解析：神经源性肿瘤绝大多数发生于后纵隔脊柱旁沟处，可部分发生在椎间孔内，使肿瘤呈"哑铃"状生长。

单项选择题

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable （） of the technical requirements for the software product. During the requirements definition phase, the requirements definition team uses an iterative process to expand a broad statement of the system requirements into a complete and detailed specification of each function that the software must perform and each （） that it must meet. The starting point is usually a set of high-level requirements from the （） that describe the project or problem. In either case, the requirements definition team formulates an overall concept for the system and then defines （） showing how the system will be operated, publishes the system and operations concept document, and conducts a system concept review(SCR). Following the SCR, the team derives （） requirements for the system from the high level requirements and the system and operations concept. Using structured or object-oriented analysis, the team specifies the software functions and algorithms needed to satisfy each detailed requirement.

The purpose of the requirements definition phase is to produce a clear, complete, consistent, and testable （） of the technical requirements for the software product.

A．function

B．definition

C．specification

D．statement
查看答案
多项选择题

综合评分法中综合评分的主要因素是（）等等。

A.价格

B.技术

C.财务状况

D.信誉

E.质量
查看答案