问题
单项选择题
微型计算机中运算器的主要功能是进行( )。
A．算术运算
B．逻辑运算
C．初等函数运算
D．算术和逻辑运算
答案
参考答案：D
解析： 微型计算机中运算器的主要功能是对二进制数码进行算术运算或逻辑运算，也称它为算术逻辑部件。故正确答案为D。
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微型计算机中运算器的主要功能是进行( )。
A．算术运算
B．逻辑运算
C．初等函数运算
D．算术和逻辑运算
参考答案：D
解析： 微型计算机中运算器的主要功能是对二进制数码进行算术运算或逻辑运算，也称它为算术逻辑部件。故正确答案为D。
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| In 1982, Steven Callahan was crossing the Atlantic alone in his sailboat when it struck something and sank. He got into a life boat, but his supplies were 1 . His chances of surviving were small. 2 when three fishermen found him 76 days later, he was alive-much 3 than he was when he started, but alive. His 4 of how he survived is fascinating. His cleverness - how he 5 to catch fish, how he evaporated(蒸发)sea water to 6 fresh water - is very interesting. But the thing that 7 my eye was how he managed to keep himself going when all hope seemed lost, and there seemed no 8 in continuing the struggle. He was starved and 9 worn-out. Giving up would have seemed the only possible choice. When people 10 these kinds of circumstances (境遇), they do something with their minds that gives them the courage to keep going. Many people in 11 desperate circumstances 12 in or go mad. Something the survivors do with their thoughts helps them find the courage to carry on 13 difficulties. "I tell myself I can 14 it," wrote Callahan in his book. "Compared to what others have been through, I'm fortunate. I tell myself these things over and over, 15 up courage… | ||||
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