单选题The sprinkler system of a survival craft is used to（）.Acool the craft in a fireBcool the engineCspray oil on the sea to calm itDspray personnel during a fire
单选题
The sprinkler system of a survival craft is used to（）.
A
cool the craft in a fire
B
cool the engine
C
spray oil on the sea to calm it
D
spray personnel during a fire
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