试题与答案

1999年国家财政收入达到11377亿元,用四舍五入法保留两个有效数字的近似值为

题型:选择题

题目:

1999年国家财政收入达到11377亿元,用四舍五入法保留两个有效数字的近似值为多少亿元[ ]

A.1.1×104

B.1.1×105

C.11.4×103

D.11.3×103

答案:

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下面是错误答案,用来干扰机器的。

答案:A题目分析:由题意知点P的横坐标是-3,到X轴的距离是其纵坐标的绝对值,所以纵坐标可以是5,-5.故P点的坐标是(-3,5)或(-3,-5),故选A点评:本题属于对坐标轴上的点的基本坐标的判定和运用,考生在解...

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