数轴上有一点到原点的距离为512，那么这点表示的数是______．_爱下问搜题

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问题填空题

数轴上有一点到原点的距离为5

1

2

，那么这点表示的数是______．

答案

一点到原点的距离为5

1

2

，那么这点表示的数是±5

1

2

．

故答案为：±5

1

2

．

选择题

He has been doing the job for many years, but has never felt ________ it, though his workmates think it is a ________ one．

A．tired of; tired

B．tired of; tiring

C．tiring of; tired

D．tiring of; tiring

判断题

在单CPU的系统中，任何时刻都有一个进程处于运行状态。