Which item may be substituted for，in the fireman’s outfit，on a cargo vessel?（）<br>A:fire ax<br>B:flashlight<br>C:rigid helmet<br>D:flame safety lamp

Which item may be substituted for，in the fireman’s outfit，on a cargo vessel?（）
A:fire ax
B:flashlight
C:rigid helmet
D:flame safety lamp

出自：海船船员证

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