Astute service providers realize that the continued support

【名词&注释】

网络通信(network communication)、高钙血症(hypercalcemia)、网络设备(network equipment)、骨转移癌(bone metastases)、血尿素氮(blood urea nitrogen)、慢性肾炎(chronic nephritis)、急性肾炎(acute nephritis)、急性肾盂肾炎(acute pyelonephritis)、一个中心(one center)、甲状旁腺功能(parathyroid function)

[单选题]Astute service providers realize that the continued support of legacy X.25 and asynchronous network element using separate operations network is cost(16).For example,the maintenance of multiple networks can require additional staff. Often, this staff must be trained on multiple vendor technologies, sometimes requiring parallel groups specializing in each (17) .Hence, additional maintenance procedures must be maintained and administrative records are (18) .The duplication of transport facilities to carry (19)network traffic is an inefficient use of resources. And not surprisingly, more technologies installed in a central office means the necessity for more physical space, and an increase in power connections and power consumption migration of these (20) network elements to IP-based DCns is alogical strategy.

A. C

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学习资料：

[多选题]下列那些病因可以引起高钙血症()

A. A．骨转移癌
B. B．糖尿病
C. C．甲状腺髓样癌
D. D．甲状旁腺功能^{(parathyroid function)}亢进
E. E．胰腺癌

[单选题]女性，18岁，因尿少、水肿、头晕、腰痛1周入院，血压140／100mmHg，血红蛋白120g／L，血清白蛋白40g／L，尿蛋白（++），白细胞3～4个／HP，红细胞10～15个／HP，抗链球菌溶血素明显升高，补体C3低下，血尿素氮8．3mmol／L，血肌酐178μmol／L，B超示双肾增大，最可能的诊断是（）

A. 急性肾盂肾炎^{(acute pyelonephritis)}
B. 急性肾炎^{(acute nephritis)}
C. 肾病综合征
D. 慢性肾炎
E. 慢性肾衰竭

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