问题
单项选择题
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
答案
参考答案：D
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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
参考答案：D