20. 在冷凍系統那兩個裝置之間冷媒為高壓液態？ (A) 壓縮機與冷凝器之間 (B) 冷凝器與膨脹閥之間 (C) 膨脹閥與蒸發器之間 (D) 蒸發器與壓縮機之間

6. 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) Close the lubricating oil priming pump and the pressure indicator cocks of all the cylinders. (B) While turning the flywheel, make sure the lubricating oil is dropping from each part of the valve rocker arm shafts, piston pins, main bearings and swing arms. (C) Bleed the air from the lubricating oil strainer. (D) Manually lubricate the governor linkage, and make sure it moves smoothly.

20. 在冷凍系統那兩個裝置之間冷媒為高壓液態？
(A) 壓縮機與冷凝器之間
(B) 冷凝器與膨脹閥之間
(C) 膨脹閥與蒸發器之間
(D) 蒸發器與壓縮機之間

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