When the dock is refilled with water after docking repair, the first work which should be done by engineers is ()
When the dock is refilled with water after docking repair, the first work which should be done by engineers is ()
If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the()
The soda-acid portable extinguishers must be discharged and refilled ().
If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the()
The soda-acid portable extinguishers must be discharged and refilled ().