单项选择题
An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
A.lack of toxicity
B.the multipurpose extinguishing ability
C.burn-back protection
D.cooling ability
点击查看答案&解析
相关考题
-
单项选择题
All inspected vessels on unrestricted ocean routes must have equipment on board for testing an individual’s（）.
A.blood
B.breath
C.urine
D.All of the above -
单项选择题
After an accident the victim may go into shock and die. What should be done to help prevent shock?（）
A.Slightly elevate the head and feet
B.Keep the person awake
C.Keep the person lying down and at a comfortable temperature
D.Give the person a stimulant to increase blood flow -
单项选择题
According to the T-Boat regulations the reason for providing adequate ventilation for a battery storage area is to prevent（）.
A.accumulation of carbon dioxide gas that chokes the battery
B.accumulation of explosive and toxic gases the battery can generate
C.mildew or dry rot in the battery box
D.battery failure including battery case meltdown caused by excessive heat
