One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）

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

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

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（）

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

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

Diesel engine air start system check valves are opened by （）

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

To proceed to the assistance of a ship in distress is（）

（） is not installed on the main switchboar.