B．efore entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an ____.

A．Orsat apparatus

B．flame safety lamp

C．Halide torch

D．combustible gas indicator

[单选题]Before being used the fuel service tank should be drained of （）.A . soda solutionB . mechanical impuritiesC . ballastD . water and residual

[单选题]In fighting a fire in a fuel tank, the FIRST action you should attempt is to _____.A．secure all sources of fresh air to the tankB．begin transferring the fuel to other tanksC．top off the tank to force out all vaporsD．station someone at the fixed CO2 r

[名词解释] Fuel tank capacity油箱容积

Just before _ fuel is injected into the cylinder by the fuel injector.A. TDCB. L

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

All details of fuel bunkering，ballast handling tank cleaning or slop disposal mu

[单选题]When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.A . filter to remove the fuel oilB . use the settler to remove the fuel oilC . remove the fuel oil by centrifugingD . drain and then renew the lube oil supply

[单选题]The engine has one or two group of fuel pumps, depending upon （）.A . the number of fuel valvesB . the number of cylindersC . the speed of engineD . the power of engine

[单选题]The carrier has，before and at the beginning of the voyage，to（）due diligence to make the ship seaworthy.A . payB . exportC . importD . exercise

Fuel injection begins during the compression stroke, before the piston reaches _