Accidental escape of oil out of a tank

1、Foaming of the oil in a refrigeration

Foaming of the oil in a refrigeration compressor crankcase is caused by （）.Arefrigerant boiling out of solution from the lube oilBliquid refri...

2、Movement of liquid in a tank when a ve

Movement of liquid in a tank when a vessel inclines causes an increase in（）.Arighting armBmetacentric heightCheight of the uncorrected KGDnatural rolling period

3、Oil oxidation, as a result of excessiv

Oil oxidation, as a result of excessively high lube oil temperature, is harmful to a diesel engine because （）Aoil foaming will occurBlarge quantities of oil are consumedClube oil viscosity is always decreasedDcorrosive by-products are usually formed

4、The selection of a lubricating oil dep

The selection of a lubricating oil depends to a great extent on the operating conditions,（）.Athe type of coolantBthe design of the engineCthe type of fuel to be burnedDB and C

5、On a tank vessel, which of the followi

On a tank vessel, which of the following substances would be burning in a class "B" fire?（）AOilBWoodCRagsDElectrical wiring

6、A fire of escaping liquefied flammable

A fire of escaping liquefied flammable gas is best extinguished by（）.Acooling the gas below the ignition pointBcutting off the supply of oxygenCstopping the flow of gasDinterrupting the chain reactio