The oil is drawn from a drain tank through （）, one of a pair of pumps, into one of fine filters.

[单选题]_________ is a little oil in the tankA．ThereB．ThisC．ThoseD．These

[单选题]If diesel oil in this tank is used, the （） of the oil must not exceed 120 degree F.A . viscosityB . flash pointC . acid valueD . temperature

[单选题]When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?A．The propeller hub taper and shaft keyway should be inspected for cracks or corrosionB．The stern bearing alignment with the ster

[单选题]What conclusion can be drawn from this passage?A.The more a person cheats,

[单选题]Itseemsoil________fromthispipeforsometime.We’llhavetotakethemachineaparttoputitright.A．)hadleakedB)isleakingC)leakedD)hasbeenleaking

[单选题]The selection of an oil from the （） depends to a great extent on the operating conditions, the design of the engine and the type of fuel to be burned.A . commercially availableB . commerciallyC . commercial availableD . commerce available

Fuel oil tank vents are fitted with a corrosion resistant wire mesh screen to___

_______can cause oil flow from water outlet of the oil purifier.A. Oil inlet val

[单选题]What can be drawn from Villasenor′ s experience?A.Some editors of mainstrea

[单选题]The removal of （） from lubricating oil will reduce engine wear and possible breakdowns.A . contaminating waterB . contaminated additivesC . contaminated fuelD . contaminating impuritie