A.Immediately use all the signals at once
B.Use all the signals during the first night
C.Employ a signal every hour after abandoning ship until they are gone
D.Use them only when you are aware of a ship or plane in the area
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A.non-toxic gas
B.Oxygen
C.Hydrogen
D.Helium
A.limited to carry no more than 10 persons
B.stowed not more than 59 feet above the lightest waterline
C.stowed in quick release racks
D.inspected every six months
A.the call sign and name
B.the official number and name
C.the port of registry and name
D.the port of registry and official number
A.breaking the weak link
B.releasing the tie-down strap
C.pulling the operating cord
D.releasing the CO2 canister
A.cutting the straps that enclose the container
B.removing the rubber sealing strip from the container
C.loosening the turnbuckle on the securing strap
D.pushing the button on the hydrostatic release
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Inflatable liferafts shall be serviced at an approved servicing facility every 12 months or not later than the next vessel inspection for certification. However，the total elapsed time between servicing cannot exceed（）.
If an inflatable liferaft is overturned，it may be righted by（）.
The most important reason for taking anti-seasickness pills as soon as possible after entering a liferaft is to（）.
If the liferaft capsizes，all personnel should leave the raft and（）.
Prior to boarding from a vessel，a davit-launched liferaft should be well ventilated of excess（）.
Personnel boarding a davit-launched liferaft from a ship should be checked to assure they are not in possession of or wearing（）.
The operating cord on an inflatable liferaft also serves as a（）.
The bosun has thrown the liferaft into the water before abandoning the vessel. The operating cord（）.
The hydrostatic release on the inflatable liferafts on a fishing vessel must be（）.
In evacuation from a ship，an individual without the option of a survival craft or liferaft should enter the water on the leeward side，except when（）.