單項(xiàng)選擇題Since accumulations of H2S gas on a ship can be dangerous to personnel，it is important to know that H2S gas is（）.

A.lighter than air
B.heavier than air
C.a yellow gas that is easily recognized
D.mildly toxic


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1.單項(xiàng)選擇題Severe exposure to chlorine gas can be fatal. Chlorine gas is primarily a（）.

A.respiratory irritant
B.skin burning agent
C.blood poisoning agent
D.nerve paralyzing irritant

2.單項(xiàng)選擇題Segregation of cargoes refers to（）.

A.separating cargoes so that the inherent characteristics of one cannot damage the other
B.separating cargoes by destination
C.classifying cargoes according to their toxicity
D.listing the cargoes in order of their flammability

4.單項(xiàng)選擇題Persons who have swallowed a non-petroleum based poison are given large quantities of warm soapy water or warm salt water to（）.

A.induce vomiting
B.absorb the poison from the blood
C.neutralize the poison in the blood
D.increase the digestive process and eliminate the poison

5.單項(xiàng)選擇題Medical treatment aboard a ship should not go beyond examination and emergency care without first consulting（）.

A.the designated medic aboard
B.the shore based superintendent
C.a medical doctor
D.the approved company medical manual