问题
单项选择题
热水锅炉循环中断事故的原因之一是()。
A、压力高
B、温度低
C、满水
D、气塞
答案
参考答案:D
热水锅炉循环中断事故的原因之一是()。
A、压力高
B、温度低
C、满水
D、气塞
参考答案:D
改错. | |
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