问题
单项选择题
()肥皂水试验检查设备、附件及管路漏气。
A、严禁
B、可以
C、无要求
答案
参考答案:B
()肥皂水试验检查设备、附件及管路漏气。
A、严禁
B、可以
C、无要求
参考答案:B
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