A.matching pulse rates of at least 20 stations
B.an automatic on-and-off switch
C.a horizontal matching of all delayed hyperbolic signals
D.automatic signal acquisition and cycle matching
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A.be a stopper
B.shorten a line
C.join lines of equal size
D.keep a line from passing through a sheave
A.there are fifteen pounds of CO2 in the container
B.the container，when full，weighs fifteen pounds
C.the pressure at the discharge nozzle is l5 psi
D.the empty container weighs fifteen pounds
A.a safety line attached to a man working over the side
B.used to measure water depth
C.used to slow the headway of a barge
D.used to measure the overhead height of a bridge
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最新試題
A VLCC (100，000 DWT+) with a 30，000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a（）.
A continuous watertight bulkhead on a ship is normally also a(n)（）.
A “full service” Loran-C receiver will provide（）.
A “sheepshank” is used to（）.
A casualty report of an intentional grounding of a ship is required under what condition?（）
A chart position enclosed by a square is a(n)（）.
A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.
A “spring line” is（）.
A chart with a scale of 1:80，000 would fall into the category of a（）.
A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.