單項選擇題

Which of the following best describes the thermodynamic effect on the pressure and volume relationship with regards to saturated gases?（）

A.As pressure decreases, volume increases
B.As volume increases, pressure increases
C.As volume decreases, pressure decreases
D.As pressure increases, volume increases

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單項選擇題

To operate a centrifugal fire pump at reduced capacity, you should （）.

A.readjust the relief valve
B.throttle the suction line
C.throttle the discharge valve
D.open the priming line

單項選擇題

An AC synchronous transmission type remote steering control system consists of a （）.

A.transmitter at the steering station and a receiver at the steering engine
B.reversible motor at the steering station geared to the steering pumps
C.small induction motor on the bridge which controls the redder through pulleys
D.variable displacement hydraulic pump driven by a reversible DC motor