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【单选题】
Many hair problems ▁ what you eat.A.
result in
B.
result from
C.
lead to
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【简答题】比多边形建模灵活度更高的建模方式是( )
【简答题】一陨石在地表上方高为h=4.2×10 3 km的圆形轨道上绕地球运动，它突然与另一质量小得多的小陨石发生正碰，碰后损失掉2%的动能．假定碰撞不改变大陨石的运动方向和质量，试求大陨石在碰撞后最接近地心的距离．地球半径取为R=6.4×10 3 km。
【单选题】【单选】A vessel, the passage of which is not to be impeded, _____ to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
A.
remains fully obliged
B.
has no obligation
C.
is not likely
D.
is exempted
【单选题】A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
A.
remains fully obliged
B.
has no obligation
C.
is not necessarily
D.
is exempted
【简答题】边形建模方式是什么?
【单选题】A vessel, the passage of which is not to be impeded, to comply with thus Rule when the two vessels are approaching one another so as to involve risk of collision.
A.
has no obligation
B.
is not likely
C.
is exempted
D.
remains fully obliged
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