试题与答案

室外供热管道的供水管或蒸汽管,如设计无规定时,应敷设在热介质前进方向的( )。 A

题型:单项选择题

题目:

室外供热管道的供水管或蒸汽管,如设计无规定时,应敷设在热介质前进方向的( )。

A.右侧或上方
B.右侧或下方
C.左侧或上方
D.左侧或下方

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:题目的大意是:数据可以复制并粘贴到电子表的另一处,而原始的数据仍然保留。Copied and pasted:复制和粘贴,cut and pasted:剪切和粘贴,copied and cut:复制和剪切,cut and moved:剪切和移动。

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          反应前物质的质量 / g反应后物质的质量 / g
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(2)若不考虑该合金中除Cu、Zn以外的其他成分,请计算原Cu – Zn合金中Zn的质量。写出必要的计算过程。

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