22. 安裝在艙底水歧管上之閥，均應為何種閥？ (A) 閘門閥 (B) 節流閥 (C) 減壓閥 (D) 停止止回閥

9. The followings are procedures of air running. (1)Set the ENGINE/REMOTE operation selector switch in the ENGINE position. (Alarm panel in engine room) (2)Open the pressure indicator cocks of all the cylinders. (3)Set the start/stop lever in the STOP position. (4)Hold the START switch pressing for 2 to 3 seconds to effect air running. Which one is correct? (A) (1)→(2)→(3)→(4) (B) (1)→(4)→(3)→(2) (C) (4)→(2)→(3)→(1) (D) (4)→(2)→(1)→(3)

22. 安裝在艙底水歧管上之閥，均應為何種閥？
(A) 閘門閥
(B) 節流閥
(C) 減壓閥
(D) 停止止回閥

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