输气压力为1.2MPa 的燃气管道为( )燃气管道。A、次高压A B、次高压B C、高压A D、高压B

作者: rantiku 人气: - 评论: 0
问题 输气压力为1.2MPa 的燃气管道为( )燃气管道。
选项 A、次高压A B、次高压B C、高压A D、高压B
答案 A
解析

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