A.MRCC
B.SOSREP
C.MCA
D.3A
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A.Foam conducts electricity
B.To be most effective，foam should be directed at the base of the fire
C.Foam is most effective on burning liquids which are flowing
D.Foam can ONLY be used to extinguish class A fires
A.Give them brandy
B.Keep them in motion
C.Immerse them in a warm bath (105°F，40°C)
D.Cover them with an electric blanket set for maximum temperature
A.Foam should not be used on electrical fires
B.One kilo of low expansion foam solution produces much more foam
C.Foam is only efficient when it covers the top of burning combustibles
D.A stream of foam should be deflected off the deck in order to best agitate the fire
A.Stranding or grounding
B.Striking upon rocks or shoals
C.Collision between ships
D.Fire
A.Check the tag to see when the extinguisher was last charged
B.Release a small amount of CO2; if the CO2 discharges，the extinguisher is acceptable
C.Weigh the extinguisher and compare the weight against that stamped on the valve
D.Recharge the extinguisher at least once each year
最新試題
Changing rescuers while carrying out artificial respiration should be done（）.
The indication of a slipping anchor is a（n）（）.
You are approaching another vessel and see that it has the signal flag “O” hoisted．What is your next action（）.
The self-contained breathing device should not be used in which situation（）.
If your radiotelephone fails while underway，（）.
MERSAR is replaced by（）.
Generally speaking，the most favorable bottom for anchoring is（）.
An uncontrolled flow of gas，oil，or other well fluids into the atmosphere is called a（）.
If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left，you would（）.
If an airplane circles a vessel 3 times，crosses the vessel’s course close ahead while rocking the wings，and heads off in a certain direction，what does this indicate（）.