问题
单项选择题
Bilge keels are more effective at clampening rolls as the（）.
A.pitching increases
B.list increases
C.rolling increases
D.dreft increases
答案
参考答案：C
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Bilge keels are more effective at clampening rolls as the（）.
A.pitching increases
B.list increases
C.rolling increases
D.dreft increases
参考答案：C