You board an inflatable liferaft that has been hand launched from a sinking vessel. What should you do first after everyone is onboard the liferaft?（）.

A . It is inflated by a small CO bottle that is automatically tripped when the front zipper is at the top of the zipper track B . It is inflated by a small CO bottle that is manually tripped C . It is inflated by blowing through an inflation tube D . It inflates by sea water bleeding into the flotation bladder and reacting with a chemical therei

A . Open equipment pack B . Post a lookout C . Issue anti-seasickness medicine D . Pick up other survivor

A . the floating-free method only B . breaking the weak link on the painter C . throwing the entire container overboard and then pulling an the operating D . removing the securing stra

A . before you enter the water B . after you enter the water C . after one hour in the water D . after you notice that your suit is losing buoyancy

A . automatically as the liferaft inflates B . with a switch near the boarding handle C . at night because the light has a photosensitive switch D . by screwing the bulb in after the raft is inflated

A . Fire a red flare at night or a red smoke signal by day B . Send the Morse signal "N" by flashing light C . Make a round turn (360°) and resume course D . Make an "S" turn (hard right then hard left) and resume course

A . only after two hours in the water B . only after four hours in the water C . before entry into the water D . upon entry into the water

A . towing bridle B . main weather cover C . external lifelines D . righting stra

A . lifeline B . painter C . drogue D . marker

A . the float-free method ONLY B . breaking the weak link on the painter C . throwing the entire container overboard and then pulling on the operating cord to inflate the raft D . removing the securing stra

A . an officer's license B . an officer's promotion C . an officer's statement D . a seaman's book

A . removing the top half of the shell，cutting the line at its source，and renewing completely B . cutting the line where it enters the case and replacing that portion C . leaving the original line and tying another one to it so the two lines will take the strain D . an approved servicing facility ashore

A . in one of the equipment bags B . in a special pocket near the forward entrance C . on a cord hanging from the canopy D . in a pocket on the first aid kit

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

A . go into place as the raft is inflated B . be put up after everyone is aboard C . be put up only in severe weather D . be used as a sail if the wind is blowing

A . pulling a cord B . cutting the wire restraining bands C . removing the rubber packing strip D . throwing the entire container overboard

A . tell the Master B . leave the bands in place C . tell the Mate D . remove the bands yourself

A.asphyxiation due to keeping the canopy closed B.hypothermia caused by cold temperature C.collapse of the raft due to cold temperatures D.starvation

A．MAF B．MAB C．MAA D．MAE