题目内容

Aclass"C"fireisburning（）.

A. dieseloil
B. magnesium
C. dunnage
D. electricalinsulation

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Exceptinrarecases,itisimpossibletoextinguishashipboardfireby（）.

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B. removingtheoxygen
C. removingthefuel
D. interruptingthechainreaction

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A. Fueloil
B. Wood
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A. NO
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A. Class"A"
B. Class"B"
Class"C"
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