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單項選擇題

Since electrical burn victims may be in shock，the FIRST medical response is to check for（）

A.indication of broken bones
B.breathing and heartbeat
C.symptoms of concussion
D.bleeding injuries

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單項選擇題

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

單項選擇題

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

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