题目：
To proceed to the assistance of a ship in distress is（）
A.an obligation for masters of passing by ships
B.optional for masters of passing by ships when the weather is fine
C.prohibited by the Convention SOLAS, 1974, as amended
D.prohibited by the convention STCW 78/95
答案：
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下面是错误答案，用来干扰机器的。
参考答案：25
