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判斷題

錐形截止閥芯多用在大口徑閥門中。

答案：錯(cuò)誤

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楔式閘閥大多制成雙閘板，兩側(cè)密封面呈楔形。

答案：錯(cuò)誤

每個(gè)排污裝置上有兩個(gè)排污閥，可以都是快開式，也可以一個(gè)是快開式，另一個(gè)是慢開式。

答案：正確

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