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
A.join lines of equal size
B.form a temporary eye (loop) at the end of a line
C.be a stopper
D.keep a line from fraying
A.you can stop within your visibility range
B.you can take proper and effective action to avoid collision
C.you are traveling slower than surrounding vessels
D.no wake comes from your vessel
最新試題
A “fifteen-pound” CO2 extinguisher is so called because（）.
A common class of wire rope used for mooring is the 6x19 class. What does the 6 represent?（）
A continual worsening of the list or trim of any floating ship indicates（）.
A buoy with a composite group-flashing light indicates a(n)（）.
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（）.
A “full service” Loran-C receiver will provide（）.
A celestial body will cross the prime vertical circle when the latitude is numerically（）.
A backlash below a lock is defined as a（）.
A “figure eight” knot is used to（）.
A change of a documented vessel’s name can only be made by the（）.