A.low pressure at all times
B.full pressure at all times
C.low pressure at intermittence
D.full pressure at intermittence
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A.an auxiliary reservoir
B.a controlling air bottle
C.an emergency air compressor
D.a main air compressor
A.container ships
B.bulk carriers
C.passenger ships
D.barges
A.the fuel oil
B.the lubricating oil
C.the refrigerating oil
D.the hydraulic oil
A.one salt water, one fresh water
B.one salt water, one fuel
C.one fresh water, one fuel
D.one steam, one fuel
A.main engines
B.main boilers
C.pipes and fittings
D.A and B
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The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
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