A.water-tube natural circulation boilers
B.fire-tube boilers
C.water-tube forced circulation boilers
D.all of the above
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A.The pistons reciprocate
B.The ‘B’ end cylinder barrel rotates
C.There is no fluid flow
D.Power is transmitted hydraulically
A.20
B.40
C.60
D.80
A.modulating the oil flow with the six-way valve
B.moving the automatic pressure differential valve
C.moving the receiving telemotor which regulates the tow-way valve
D.varying the eccentricity of a floating ting or angle of a tilting box
A.rudder angle indicator
B.follow-up gear
C.telemotor position
D.relief valves
A.a differential gear
B.return springs
C.a hydraulic accumulator
D.relief valves
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