问题
单项选择题
A life line must be connected to the liferaft（）.
A.at the bow
B.at the stern
C.in the middle
D.all around
答案
参考答案：D
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A life line must be connected to the liferaft（）.
A.at the bow
B.at the stern
C.in the middle
D.all around
参考答案：D