（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.

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（）

（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

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

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.

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）

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

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

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

The main purpose of port State control is not to（）