单项选择题
A crew member has suffered frostbite to the toes of the right foot. Which is NOT an acceptable first aid measure?（）
A.Rub the toes briskly
B.Elevate the foot slightly
C.Rewarm rapidly
D.Give aspirin or other medication for pain if necessary
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A continuous watertight bulkhead on a ship is normally also a(n)（）.
A.structural bulkhead
B.exterior bulkhead
C.centerline bulkhead
D.joiner bulkhead -
单项选择题
A continual worsening of the list or trim of any floating ship indicates（）.
A.negative GM
B.progressive flooding
C.structural failure
D.an immediate need to counterflood -
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A conscious victim who has suffered a blow to the head has symptoms that indicate the possibility of concussion. If the patient feels no indication of neck or spine injury，recommended treatment would include（）.
A.turning the victim's head to the side to keep his airway open
B.positioning the victim so the head is lower than the body
C.giving the victim water if he is thirsty，but no food
D.elevating the head and shoulders slightly with a pillow
