Astute service providers realize that the continued support

【名词&注释】

心电图(electrocardiogram)、网络通信(network communication)、网络设备(network equipment)、提供商(provider)、心律不齐(arrhythmia)、不符合(inconformity)、止泻药(antidiarrheal)、一个中心(one center)、退热药(febrifuge)、不允许(not allow)

[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. B

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学习资料：

[多选题]4岁女孩，发热，流涕3天，后出现心悸、胸闷。查体面色苍白，精神萎靡，两肺无异常，心音有力，心律不齐。急查心电图示窦性心律，95次/分，P-R间期逐渐延长，终于P波后不出QRS波。

A. B, E

[单选题]以下哪种是儿科常用的药物（）

A. 肾上腺皮质激素
B. 止泻药^{(antidiarrheal)}
C. 镇咳药
D. 泻药
E. 退热药^(febrifuge)

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