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问题 单项选择题

如有柜员未签退就离开营业单位，下列哪些说法是正确的（）

A、必须由该柜员回营业机构自己作签退

B、主管柜员经其他主管授权后对未签退柜员进行强制签退

C、主管柜员经其他主管授权后可以不签退扎帐

D、主管柜员经其他主管授权后强制扎帐

答案

参考答案：B

选择题

神经系统中，把神经纤维分为有髓鞘和无髓鞘两大类，现代生物学认为，髓鞘是由多层类脂物质─髓质累积而成，具有很大的电阻，经实验测得髓质的电阻率为ρ=8×106Ω·m。某生物体中某段髓质神经纤维可看作高20cm、半径为4cm的圆柱体，当在其两端加上电压U=100V时，该神经发生反应，则引起神经纤维产生感觉的最小电流为（   ）

A．0.31μA

B．0.62μA

C．0.15μA

D．0.43μA
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单项选择题

Many people are surprised when they find the Internet(因特网)was set up in the 1960s. At that time, computers were large and expensive. Computer networks(网络) didn’t work well. If one computer in the network broke down, then the whole network stopped. So a new network system (系统) had to be set up. It should be good enough to be used by many different computers. If a part of the network was not working, information could be sent through another part. In this way computer network system would keep on working all the time.
At first the Internet was only used by the government, but in the early 1970s,universities(大学) ,hospitals and banks were allowed(允许) to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use.
Today it is easy to get on-line(上网) and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students.
The Internet has now become one of the most important parts of people’s life.

The word" information" may probably mean

A. letter


B. message

C. number
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