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问题 单项选择题

甲亢术前加服碘剂的主要目的是

A．减少甲状腺素释放

B．抑制术后纤维组织增生

C．减少甲状腺血供，使腺体更坚实

D．抑制自身免疫，使术后不会因诱发自身免疫而导致甲状腺功能减退

E．以上都不是

答案

参考答案：C

单项选择题

(51) is a six bytes OSI layer 2 address which is burned into every networking device that provides its unique identity for point to point communication.
(52) is a professional organization of individuals in multiple professions which focuses on effort on lower-layer protocols.
(53) functions with two layers of protocols. It can connect networks of different speeds and can be adapted to an environment as it expands.
(54) is the popular LAN developed under the direction of the IEEE802.5.
(55) is the popular backbone technology for transmitting information at high speed with a high level of fault tolerance which is developed under the direction of ANSI.

A．The hub

B．The bridge

C．The router

D．The proxy
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单项选择题

流动资金估算的基础主要是( )。

A．营业成本和贷款金额

B．营业收入和贷款利率

C．营业成本和营业收入

D．贷款金额和贷款利率
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