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單項選擇題Certain requirements must currently be met by a ship’s steering system.There must be （）independent means of steering, although where two identical power units are provided, an auxiliary unit is not required.

A.one
B.two
C.three
D.four

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1.單項選擇題In the variable delivery pump, moving the spindle more from the central point will cause （） fluid to be pumped and consequently （）pressure is generated to drive the rams.

A.more；more
B.more；less
C.less；more
D.less；less

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2.單項選擇題The required rudder angle is transmitted hydraulically or electrically from the steering wheel at the bridge to the （）at the steering gear, just above the rudder.

A.transmitter
B.tele-motor
C.hydraulic ram
D.hydraulic cylinder

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3.單項選擇題The transmission system is the means （）the movement of the rudder is accomplished.

A.by which
B.to which
C.in which
D.at which

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4.單項選擇題Deck machinery, which is also known as hull machinery, includes all power driven equipment located （）the machinery spaces that is （） with the main propulsion plant.

A.inside；associated
B.inside；not associated
C.outside；associated
D.outside；not associated

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5.單項選擇題In boilers, besides maintaining the burner atomizers, air diffuser vanes, fuel temperature, forced draft fan, fuel pump and other hardware in good condition, there are some adjustments on the （）that can produce a good flame for the most efficient operation.

A.fuel-air ratio
B.compression ratio
C.fuel rack
D.viscosity index

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