迫击炮弹发射角为60°,反射速率为150m/s,炮弹击中倾角为30°的山坡上的目标A.若发射点在山脚O,求OA间距离答案给的是153m
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![迫击炮弹发射角为60°,反射速率为150m/s,炮弹击中倾角为30°的山坡上的目标A.若发射点在山脚O,求OA间距离答案给的是153m](/uploads/image/z/8487414-54-4.jpg?t=%E8%BF%AB%E5%87%BB%E7%82%AE%E5%BC%B9%E5%8F%91%E5%B0%84%E8%A7%92%E4%B8%BA60%C2%B0%2C%E5%8F%8D%E5%B0%84%E9%80%9F%E7%8E%87%E4%B8%BA150m%2Fs%2C%E7%82%AE%E5%BC%B9%E5%87%BB%E4%B8%AD%E5%80%BE%E8%A7%92%E4%B8%BA30%C2%B0%E7%9A%84%E5%B1%B1%E5%9D%A1%E4%B8%8A%E7%9A%84%E7%9B%AE%E6%A0%87A.%E8%8B%A5%E5%8F%91%E5%B0%84%E7%82%B9%E5%9C%A8%E5%B1%B1%E8%84%9AO%2C%E6%B1%82OA%E9%97%B4%E8%B7%9D%E7%A6%BB%E7%AD%94%E6%A1%88%E7%BB%99%E7%9A%84%E6%98%AF153m)
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