單項選擇題If you came into contact with nitrobenzene while disconnecting the cargo hose，you should be aware that it is（）.

A.highly toxic when absorbed through the skin
B.a blood poison
C.a nerve poison
D.All of the above


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1.單項選擇題If the patient vomits during mouth-to mouth resuscitation，the rescuer should FIRST（）.

A.ignore it and continue mouth-to-mouth ventilation
B.pause for a moment until the patient appears quiet again，then resume ventilation mouth-to-mouth
C.switch to mouth-to-nose ventilation
D.turn the patient's body to the side，sweep out the mouth and resume mouth-to-mouth ventilation

2.單項選擇題If a crewman suffers a second-degree burn on the arm，you should（）.

A.drain any blisters
B.apply antiseptic ointment
C.scrub the arm thoroughly to prevent infection
D.immerse the arm in cold water

3.單項選擇題If a crew member is exposed to phenol by way of skin or eye contact，you should IMMEDIATELY（）.

A.administer oxygen
B.treat victim for shock
C.flush skin and eyes with water
D.give victim stimulant

4.單項選擇題Halon gas will decompose and may form very hazardous toxic fumes when discharged（）.

A.directly on flames
B.at room temperature
C.in an extremely cold climate
D.None of the above

5.單項選擇題First aid treatment for small cuts and open wounds is to（）.

A.lay the patient down and cover the wound when the bleeding stops
B.stop the bleeding，clean，medicate，and cover the wound
C.apply an ice pack to the wound and cover it when the bleeding stops
D.apply a hot towel to purge the wound，then medicate and cover it