35.那種流量表不受重力之影響,可使用於任何姿勢?①Flow Restrictor②Bourdon Gauge ③ Thorpe Tube
(A)僅①
(B)僅②
(C)僅①②
(D)①②③

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統計: A(4), B(12), C(19), D(0), E(0) #1065193