单项选择题
According to the Chemical Data Guide，what does ethyl chloride produce when ignited?（）
A.Toxic fumes of oxides of nitrogen
B.Toxic fumes of lead
C.Poisonous phosgene gas
D.Poisonous chlorine gas
相关考题
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单项选择题
A victim is coughing and wheezing from a partialobstruction of the airway. An observer should （）.
A.perform the Heimlich maneuver
B.immediately start CPR
C.give back blows and something to drink
D.allow the person to continue coughing and dislodge the obstruction on his own -
单项选择题
A victim has suffered a second-degree burn to a small area of the lower arm. What is the proper treatment for this injury?（）
A.Immerse the arm in cold water for 1 to 2 hours，apply burn ointment，and bandage
B.Open any blisters with a sterile needle，apply burn ointment and bandage
C.Apply burn ointment，remove any foreign material and insure that nothing is in contact with the burn
D.Immerse the arm in cold water for 1 to 2 hours，open any blister and apply burn ointment -
单项选择题
A shipmate suffers a heart attack and stops breathing. You must（）.
A.administer oxygen
B.immediately check his pulse and start CPR
C.make the victim comfortable in a bunk
D.immediately give a stimulant，by force if necesssary
