方程组Ax=b的雅可比迭代法收敛，则对应高斯-赛德尔迭代法也一定收敛。
A. 对
B. 错
方程组Ax=b的高斯-赛德尔迭代法收敛，雅可比迭代法可能收敛，也可能不收敛。
A. 对
B. 错
The strength deck, bottom and ( ) of a ship act as a box girder in resisting bending and other loads imposed on the structure.
A. flat keel
B. second deck
C. side shell
D. bulkhead
The plan which defines the ship form is known as a （ ）.
A. lines plan
B. sheer profile
C. body plan
D. half breadth plan
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