单选题Releasing oil from the sea anchor of a survival craft may（）.A keep the propeller from being fouledB increase propeller speedC help calm the waves in the vicinity of the craftD increase the holding power of the sea anchor

The sprinkler system of an enclosed lifeboat is used to ______.

A.cool the craft in a fire

B.cool the engine

C.spray oil on the sea to calm it

D.spray personnel during a fire

Oil slick caused by spillage of oil from tanker ship is ______.

A.a drop of oil

B.the emulsion of oil at sea surface

C.the weathered oil

D.the oil floating on the surface of the sea water

A survival craft being used to pick up a person who has fallen overboard from a ship should approach the person ______.

A.at a high rate of speed

B.under oars

C.against the wind

D.with the wind

After abandoning ship, you should deploy the sea anchor from a life raft to ______.

A.keep the life raft from capsizing

B.navigate against the current

C.keep personnel from getting seasick

D.stay in the general location

What is placed on the underside of an inflatable liferaft to help prevent it from being skidded by the wind or overturned?

A.Ballast bags

B.A keel

C.Strikes

D.Sea anchor

At sea，all required GMDSS equipment（other than survival craft equipment）must be proven operational by ______．

A.daily testing

B.either A or C

C.operational use of the equipment

D.testing at least every 48 hours

In good weather，you should deploy the sea anchor from the liferaft to ______.

A.keep the liferaft from capsizing

B.navigate against the current

C.keep personnel from getting seasick

D.stay in the general location

An inflatable life raft is thrown into the water from a sinking vessel. What occurs automatically after the painter trips the CO2 bottles to inflate the raft?______.

A.The sea anchor deploys

B.The floor inflates

C.If upside down, the craft rights itself

D.The painter detaches from the raft