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
A.greater than the declination and both are of the same name B.less than the declination and both are of the same name C.greater than the declination and both are of contrary name D.less than the declination and both are of contrary name
A.structural bulkhead B.exterior bulkhead C.centerline bulkhead D.joiner bulkhead
A.negative GM B.progressive flooding C.structural failure D.an immediate need to counterflood
A.ferries B.passenger liners C.cruise ships D.ocean going vessels
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
A.an air leak has developed in the tank B.the tank cooling system has malfunctioned C.the pilot cylinder discharge valve is leaking D.an excessive amount of insulation has been installed on the tank and piping
A.abeam B.dead astern C.just aft of the bow D.on either side of the stern
A.turning the victim's head to the side to keep his airway open B.positioning the victim so the head is lower than the body C.giving the victim water if he is thirsty，but no food D.elevating the head and shoulders slightly with a pillow
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
