單項(xiàng)選擇題The principal personnel hazard unique to Halon extinguishers is().

A.displacement of oxygen
B.skin irritation
C.inhaling toxic vapors
D.eye irritation


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1.單項(xiàng)選擇題The most effective warming treatment for a crew member suffering from hypothermia is().

A.running or jumping to create heat
B.lying in the sun
C.a warm water bath
D.mouth-to-mouth resuscitation

2.單項(xiàng)選擇題The danger associated with using carbon dioxide in an enclosed space is().

A.frostbite
B.skin burns
C.asphyxiation
D.an explosive reaction

3.單項(xiàng)選擇題The Agreement sha1l commence()a satisfactory Medical Report by a doctor nominated by the Company.

A.on the part of
B.in lieu of
C.subject to
D.in accordance with

4.單項(xiàng)選擇題Symptoms of sugar diabetes include().

A.increased appetite and thirst
B.decreased appetite and thirst
C.gain in weight
D.elevated temperature

5.單項(xiàng)選擇題Storage batteries should be charged in a well ventilated area because().

A.they generate heat
B.they emit hydrogen
C.of the toxic fumes they emit
D.they recharge faster in a well ventilated space