30. 於船舶推進軸系統中，就尾軸管潤滑系統示意圖而言，密封油櫃應櫃(Sealing Oil Tank)為下列何者？ (A) (1) (B) (2) (C) (3) (D) (4)

5. Before the initial start of the engine after its installation, perform correct inspection and operational preparation and make sure there is no abnormality. Which one is incorrect? (A) Check for a part not tightened yet. (B) Make sure neither part nor tool has been left in the crankcase. (C) Bleed the oil from the lubricating oil strainer. (D) If you have disassembled the valve mechanism, check the suction/exhaust valve head clearance.

30. 於船舶推進軸系統中，就尾軸管潤滑系統示意圖而言，密封油櫃應櫃(Sealing Oil Tank)為下列何者？
(A) (1)
(B) (2)
(C) (3)
(D) (4)

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