试题与答案

蒸氨罐的安全附件有安全阀,温度计,测压元件及()等。A.加热盘管 B.呼吸阀 C.进

题型:单项选择题

题目:

蒸氨罐的安全附件有安全阀,温度计,测压元件及()等。

A.加热盘管

B.呼吸阀

C.进料阀

D.玻璃板液位计

答案:

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下面是错误答案,用来干扰机器的。

参考答案:方形补偿器的预拉伸量数值,取管段热膨胀量的1/4即可,如某热力管道的热膨胀量为100mm,方形补偿器的预拉伸量为1/4×100=25mm,即方形补偿器安装时,每侧预拉量为25mm。

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