Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.<br>A:fireman's outfit<br>B:low-velocity spray applicator<br>C:marine strainer<br>D:pick axe

Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.
A:fireman's outfit
B:low-velocity spray applicator
C:marine strainer
D:pick axe

出自：海船船员证

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