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问题 选择题
—Sorry, teacher. I forgot _____ my homework here.
—It doesn't matter. Don't forget next time.

A. brought
B. brings
C. to brought
D. to bring
答案

答案：D

单项选择题

我们用（）来表达BSP方法的过程和数据类。

A.C/U

B.U/C

C.D/P

D.P/D
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单项选择题

单拖船拖缆方向与船舶首尾线交角为θ，当θ＝90°，且作用点在重心处时，被拖船移动的漂角β为：（）.

A.β＝90°

B.β＝0°

C.β＜θ

D.β＞θ
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