[单选题]Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the ____
[单选题]When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be ____.
[单选题]When stand-by engine instructions have been received, it’s necessary to make it sure that all valves in the various systems are ______.
[单选题]The effect that exhaust gas recirculation can reduce NOX formation is partly due to a reduction of the _____ concentration in the combustion zone, and partly due to the content of water and carbon dioxide in the exhaust gas.
[单选题]A device incorporating a variable orifice placed in series with a check valve in a hydraulic system is used to___.
[单选题]The block has spaces to accommodate _____drive arrangement (chain or gear), a housing for the camshaft and doors allowing access to the_____.
[单选题]____ means the level for which minimum appropriate protective security measures shall be maintained at all times,threats and exchanging such information with appropriate Contracting Governments.
[单选题]________must not be racked out to the isolated position whilst on load, as this action constitutes a serious fire hazard.
[单选题]Moisture absorbed in the windings or condensed on the surface of electrical machinery insulation ______.