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问题 选择题

某锂电池的电池总反应为4Li+2SOCl2=4LiCl+S+SO2，下列有关说法正确的是  [ ]

A. 锂电极作电池负极，放电过程中发生还原反应

B. 1mol SOCl2发生电极反应转移的电子数为4mol

C. 电池的正极反应为2SOCl2+2e-=4Cl-+S+SO2

D. 组装该电池必须在无水、无氧的条件下进行

答案

答案：D

单项选择题

Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up (1) at the customer premise over slow (2) ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet (3) technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the (4) or cable "modem" over a much faster medium such as Ethernet. It also means that multiple (5) can connect to the Internet through the same connection.

（2）处应填入（）

A．parallel

B．digital

C．serial

D．variable
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单项选择题

李先生计划通过投资实现资产增值的目标，在不考虑通货膨胀的条件下要求的最低收益率为13%，假定通货膨胀率为6%，则考虑通货膨胀之后李先生要求的最低收益率是( )。

A．17.6%

B．19%

C．19.78%

D．20.23%
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