单选题船舶在赤道无风带内穿越大洋时，一般采用下列何种航线较为有利（）。A大圆航线B恒向线航线C混合航线D最短航程航线
单选题
船舶在赤道无风带内穿越大洋时，一般采用下列何种航线较为有利（）。
A
大圆航线
B
恒向线航线
C
混合航线
D
最短航程航线
参考解析
解析：
暂无解析
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