A、A.1.5pdh和≯pdh+0.25MPa
B、B.(1.1~1.15)pdh和≯pdh+0.25MPa
C、C.(1.1~1.15)pdh和1.5pdh
D、D.pdh和≯pdh+0.25MPa
时间:2021-12-26 21:11 关键词: 往复泵 海船船员考试
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