船舶发生油污事故时应报告
A、由于船舶或设备受损,或为保障船舶安全和海上救助人命所进行的排放要报告最近沿岸国;对影响船舶安全的故障、失灵或损坏,例如碰撞、搁浅、火灾、爆炸、结构受损、进水、货物移动可能会发生油污事故的情况可不报告最近沿岸国以免麻烦。B
暂无解析
反馈控制是生态系统的稳态机制之一,但只有 ______ 反馈才能控制种群密度过度增长。
抗日根据地的社会性质是()
Moviegoers know that many special effects are created by computers, they often don' tknow is that these scenes still require a lot of work.
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作曲家刘天华《汉宫秋月》是 _____曲。