單項(xiàng)選擇題While sailing under normal weather and sea condition, the basic parameter which is used to restrict the fuel injection of main engine is ()

A.power of main engine
B.turbine rotation speed
C.speed of main engine
D.exhaust temperature


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2.單項(xiàng)選擇題When a ship is fully loaded, it needs to prevent the main engine to be().While a ship is fully empty, it needs to prevent the main engine to be().

A.overspeed;overload
B.overload;overspeed
C.over mechanical load;over thermal load
D.over torque;overspeed

3.單項(xiàng)選擇題When ship is fouled, increasing the fuel injection for keeping the normal speed will cause the main engine ()

A.to work as overload characteristic
B.overspeed
C.over mechanical load only
D.over thermal load only

4.單項(xiàng)選擇題The fire of burning plastics is classified as () fire.

A.Class A
B.Class B
C.Class C
D.Class D

5.單項(xiàng)選擇題The pistons are cooled by () oil from the forced lubrication.

A.being given
B.giving
C.supplying
D.being supplied