Cold weather starting of a diesel engine may be made easier by（）

The cetane rating of diesel fuel is an indication of the （）

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

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

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

Using a file without a handle may result in （）

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

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

Under MARPOL Code the ship to which it applies has to carry （）

The shipboard oil pollution emergency plan will be invalid after （）