试题与答案

计算机鼠标是为适应图形界面操作的一种输出设备。

题型:判断题

题目:

计算机鼠标是为适应图形界面操作的一种输出设备。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:(1)管道系统一般通过试水压进行严密性试验,试验时应将系统内空气排尽,试验压力如无设计规定时,一般采用工作压力的1.25倍,但不得小于0.196MPa,对于埋于地下的压力管应不小于0.392Mpa(2)管道系...

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