Flame failure in an automatically fired auxiliary boiler can from a/an （）

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）

When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

Engine parameters shall be corresponded to NOx Technical Files. This is required by （）

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）

The ISPS Code consists of a mandatory section-Part A, which shows（）

To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）