下列各进制的整数中，值最大的一个是( )。
A．十六进制数178
B．十进制数210
C．八进制数502
D．二进制数11111110
参考答案：A
解析： 不同进制数之间的比较，必须统一转换成同一进制的数。一般转换成十进制数比较方便。十六进制数178转换成十进制数是376；二进制数11111110转换成十进制数是254；八进制数502转换成十进制数是322。
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| Mrs. Green lives in the country, and she doesn't know London very well. One day, she goes to London, but she can't find her 1 . Just then, she 2 a man near the bus stop. " I can ask him the way." she says to 3 . Then she goes over to the man and asks, "Excuse me, will you please 4 me the way to King Street?" The man smiles with 5 answer. He 6 know English. He speaks Russian. He is a visitor. Then he 7 his hand into his pocket (衣袋), takes out 8 and lets her 9 it. On the paper are these words, "Sorry, I can't 10 English." | ||||
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