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
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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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A “spring line” is（）.
A “check” line is（）.
A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.
A crew member is having an epileptic convulsion. You should（）.
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 vessel’s quarter is that section which is（）.
A CO2 extinguisher on a ship which has lost 10% of its charge must be（）.
A “l(fā)iner” in riveted construction of a vessel is a(n) （）.
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A “reaching” course is one in which the wind（）.