目前一般认为，肾结核行肾切除须慎重。但以下哪种情况应考虑肾切除术（） A.广泛破坏、

已知g（x）=|x-1|-|x-2|，若关于x的不等式g（x）≥a²+a+1（x∈R）的解集为空集，则实数a的取值范围是______．

患者男性，59岁，无痛性血尿二月，右腹包块伴压痛，静脉肾盂造影示肾盂肾盏受压移位、伸长且不规则，并可见小充盈缺损。应首先诊断为：（）

A.肾结石

B.多囊肾

C.肾腺癌

D.肾胚胎瘤

E.肾转移癌

中毒时呼出气有氨味的是

A．氰化物中毒
B．糖尿病酮症酸中毒
C．有机磷农药中毒
D．一氧化碳中毒
E．尿毒症昏迷

System analysis is traditionally done top-down using structured analysis based on (90) ．Object-oriented analysis focuses on creation of models．The three types of the analysis model are (91) ．There are two substages of object-oriented analysis． (92) focuses on real-world things whose semantics the application captures．The object constructed in the requirement analysis shows the (93) of the real-world system and organizes it into workable pieces． (94) addresses the computer aspects ofthe application that are visible to users．The objects are those which can be expected to vary from time to time quite rapidly．

A．functional decomposition
B．object abstraction
C．data inheritance
D．information generalization

在IMS方面，中兴通讯整合（）等多条产品线资源，成立了公司层面的IMS研发团队，并已经有了全套的IMS解决方案，能提供IMS全系列网元支持。

A.WCDMA

B.PCS

C.NGN

D.数据产品