問題詳情
7 2 . 下列何種閥件不適合用來調整水系統之流量， 僅適合用於關斷水流：
(A) 閘閥
(B) 蝶閥
(C) 球塞閥
(D) 球型閥。
(A) 閘閥
(B) 蝶閥
(C) 球塞閥
(D) 球型閥。
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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