单项选择题
A.4Certificate of Inspection B.Certificate of Seaworthiness C.Classification Certificate D.Certificate of Registry
Fire extinguishing agents used on Class C fires must be...
单项选择题Fire extinguishing agents used on Class C fires must be（）.
A.able to absorb heat B.water based C.nonconducting D.nontoxic
Fire extinguishers on inspected vessels are numbered by...
单项选择题Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.
A.used for electrical fires only B.the smallest C.the most accessible D.the most effective
Fire extinguishers of sizes III，IV，and V are designated...
单项选择题Fire extinguishers of sizes III，IV，and V are designated as（）.
A.portable B.semi-portable C.fixed D.disposable
