A fire
B fire
C fire
D fire
第1题：
What can be extracted from fine-powder fly ash?
A. Aluminum, silicon, and magnetic.
B. Additive.
C. Paving material.
D. Cement.
第2题：
Under what conditions would the use of a Class C fire extinguisher be preferable to a Class A extinguisher? C类火灾灭火器比A类灭火器更适用于以下哪一种情况？（）
第3题：
The class of fire on which a blanketing effect is essential to extinguish the fire is
A.Class 'A'
B.Class 'B'
C.Class 'C'
D.Class 'D'
第4题：
solid materials such as wood or bales of fiber
inflammable liquids
electrical equipment
metallic solids
第5题：
Close all fire doors and use the （）（干粉灭火器）.
第6题：
A fire involving trash and paper waste would be classified as a ______.
A.class A
B.class B
C.class C
D.class D
第7题：
Fire in the cabins. Close all fire doors and use the （）powder extinguisher.
第8题：
A fire in a pile of dunnage would be classified as a _____.
A.class A
B.class B
C.class C
D.class D
第9题：
main switchboard
engine room bilge
breathing compartment
electric fresh water transfer pump
第10题：
steel
aluminum in an aluminum-hulled vessel
schedule 80 fire resistant plastic pipe
nickel-copper，copper-nickel or annealed copper