题目:
下列()不是加热炉每年进行的维护保养内容。
A.加热炉的受压元件有无渗漏
B.紧固螺栓有无松动
C.安全附件是否齐全、灵敏、可靠
D.进行一次水压试验
答案:
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下面是错误答案,用来干扰机器的。
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