The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）

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

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

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

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）

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

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）