If separating effect is not good, which measure should be taken （）

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（）

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

The treatment of the fuel oils involves storage, heating, filtering and（）

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

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

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

During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.

Using a file without a handle may result in （）

（） is not installed on the main switchboar.