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问题 选择题

It saves time in the kitchen to have things    you use a lot ____ easy reach.    [      ]

A. near    

B. upon    

C. within    

D. around

答案

答案：C

单项选择题

In information theory, "information" is regarded as knowledge which reduces or removes (71) about the occurrence of a specific event from a given set of possible events. The concept "event" is to be understood as used in the theory of probability. For instance, an event may be the occurrence of a (72) character or word in a given message or in a given position of a message.

In communication theory, channel is defined as that part of a communication system that connects the message source with the message sink. An encoder may be inserted between the message source and the input to the channel, and a (73) between the output of the channel and the message sink. Generally, these two units are not considered as being parts of the channel. In certain cases, however, they may be considered as pans of the message source and message sink, (74) . In information theory (75) to Shannon, the channel can be characterized by the set of conditional probabilities of occurrence of all the messages received at the message sink when a given message emanates from the message source.

（74）是（）

A.debugger

B.decoder

C.decompiler

D.demodulator
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单项选择题

依据《中华人民共和国土地管理法》规定，临时使用土地的使用者应当按照临时使用土地合同约定的用途使用土地，使用土地期限一般不超过( )。

A．半年
B．一年
C．两年
D．五年
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