7. 船舶製水淡化裝置在運行工作時，其真空度維持在多少百分比? (A) 百分之八十至八十四 (B) 百分之七十至七十四 (C) 百分之九十至九十四 (D) 百分之八十至九十

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.

7. 船舶製水淡化裝置在運行工作時，其真空度維持在多少百分比?
(A) 百分之八十至八十四
(B) 百分之七十至七十四
(C) 百分之九十至九十四
(D) 百分之八十至九十

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