A.keroseneB.unleaded gasolineC.diesel oilD.liquefied ga……

单项选择题Sudden unloading of a diesel engine can cause（）.

A.decreased fuel efficiency
B.increased exhaust temperature
C.black smoke
D.overspeed trip

单项选择题Storage batteries on T-Boats must be located（）.

A.in sight of the main engine(s)
B.in a tray lined with suitable material that resists damage from the electrolyte
C.in locked closets with restricted ventilation
D.near the bilge to lower the center of gravity and improve stability

单项选择题Please supply my vessel（）120 tons of diesel oil.

A.for
B.with
C.to
D.on

单项选择题Overspeed of the diesel engine driving an electric generator could cause（）.

A.low voltage trip
B.reverse power trip
C.damage to windings
D.excessive exhaust temperatures

单项选择题One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.

A.the extra weight required for the diesel reduction gearing
B.a minimum speed for the engines that limits the minimum speed of the vessel
C.the higher fuel consumption per SHP
D.the low efficiency of the system when a controllable pitch propeller is used