问题
单项选择题
Line throwing equipment should not be operated（）.
A.during a rain storm
B.in an explosive atmosphere
C.near a lifeboat station
D.by other than licensed officers
答案
参考答案：B
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Line throwing equipment should not be operated（）.
A.during a rain storm
B.in an explosive atmosphere
C.near a lifeboat station
D.by other than licensed officers
参考答案：B
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