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问题 选择题

在某期央视“金苹果”节目中，主持人逐步展示：①他是古代希腊著名的物理学家和数学家。②他发现了杠杆定律和浮力定律。③他曾豪迈地说：“给我一个支点，我将撬动整个地球。”请问他是[ ]

A．欧几里德

B．阿基米德

C．牛顿

D．爱因斯坦

答案

答案：B

单项选择题 B1型题

碱水中热溶后能变成红色的是（）

A.黄芩苷

B.芦丁

C.葛根素

D.橙皮苷

E.大豆素
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单项选择题

astute service providers realize that the continued support of legacy X.25 and asynchronous network element using separate operations network is cost (141) . 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 (142) . Hence, additional maintenance procedures must be maintained and administrative records are (143) . The duplication of transport facilities to carry (144) 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 (145) network elements to IP-based DCns is alogical strategy.

（141）是（）

A.prohibitive

B.feasible

C.connective

D.special
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