如图,某沿海开放城市A接到台风警报,在该市正南方向260km的B处有一台风中心
如图,某沿海开放城市A接到台风警报,在该市正南方向260km的B处有一台风中心,沿BC方向以15km/h的速度向D移动,已知城市A到C的距离AD=100km,那么台风中心...
如图,某沿海开放城市A接到台风警报,在该市正南方向260km的B处有一台风中心,沿BC方向以15km/h的速度向D移动,已知城市A到C的距离AD=100km,那么台风中心经过多长时间从B移到D?如果在距台风中心30km的圆形区域内都有受到台风破坏的危险,为了让D点的游人脱离危险,游人必须在接到台风警报后的几小时内撤离?
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解:(1) AB=100km AD=60km
∵AD⊥BC
∴BC=√(AB^2-AD^2)=√(100^2-60^2)=80km
80/20=4h
答:台风中心经4小时从宴隐B移到D
(2) 当台风中心移动到距D点30千米之间,游蔽升人必须撤离,所以此时台风中心移动的最大距离晌并厅是
80-30=50km
在这段时间内,游人撤离都是安全的.
50/20=2.5h
∵AD⊥BC
∴BC=√(AB^2-AD^2)=√(100^2-60^2)=80km
80/20=4h
答:台风中心经4小时从宴隐B移到D
(2) 当台风中心移动到距D点30千米之间,游蔽升人必须撤离,所以此时台风中心移动的最大距离晌并厅是
80-30=50km
在这段时间内,游人撤离都是安全的.
50/20=2.5h
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刚才那个人愚弄你,我将他的英文翻译后为:
(记者李辉博),昨日上午10时许,北京市海淀区学清路,静淑东里小区,用菜刀砍该公司负责人的家长培训。 PW物业工作人员说,折扣保守党伯奇,在现场的人说了好几次讨论没有结果后,出此下策的,因为金钱纠纷。
在蜀经学清路,东丽区,1号机组,4层的事件。明海物业海,一位工作人员说,听到呼喊楼上是一拼,他和几名保安迅速赶到楼上。打开门,发现一个50岁的男子坐在沙发,茶几上的一个血淋淋的菜刀在他面前。
曼说,孩子们收到这家公司的培训,保守党伯奇拖鞋,支付培训费用的数千美元,他认为该公司没有满足孩子的训练承诺,打算返回的钱,但不是在事发前到所有的钱追逐回。他来到粗芦这里,讨论几次,保守党伯奇网点,终于出此下策是谁负责。
头部被砍伤的公司一直躺在客厅背后的磨砂玻璃,与血头。员工拨打急救电话。随后999急救人员和东升派出所赶到现场。砍人男子被警方控制。
昨天下午,记者在清河急救中心看到,999人受伤。他的头部裹着纱布,不想接受记者采访。急诊室的医生说,病人没有生命危险。随后,记者来到发展公司,这里是北京中国国际教育咨询有限公司,公司方舟的办公室,公司锁门。记者在公司的网站上看到中写道,通过系统的专业教育和学谈滑习公司,为国际豪华邮轮培养出来的学生提供高质量,高素质的员工队伍。
PW物业工作人含凳腊员证实,该公司已经建立了几年,已经做了乘务员和其他培训。事件公司的办公室和培训基地在昌平。海淀警方称,具体原因仍在调查。
题目简单,列方程啊。
(记者李辉博),昨日上午10时许,北京市海淀区学清路,静淑东里小区,用菜刀砍该公司负责人的家长培训。 PW物业工作人员说,折扣保守党伯奇,在现场的人说了好几次讨论没有结果后,出此下策的,因为金钱纠纷。
在蜀经学清路,东丽区,1号机组,4层的事件。明海物业海,一位工作人员说,听到呼喊楼上是一拼,他和几名保安迅速赶到楼上。打开门,发现一个50岁的男子坐在沙发,茶几上的一个血淋淋的菜刀在他面前。
曼说,孩子们收到这家公司的培训,保守党伯奇拖鞋,支付培训费用的数千美元,他认为该公司没有满足孩子的训练承诺,打算返回的钱,但不是在事发前到所有的钱追逐回。他来到粗芦这里,讨论几次,保守党伯奇网点,终于出此下策是谁负责。
头部被砍伤的公司一直躺在客厅背后的磨砂玻璃,与血头。员工拨打急救电话。随后999急救人员和东升派出所赶到现场。砍人男子被警方控制。
昨天下午,记者在清河急救中心看到,999人受伤。他的头部裹着纱布,不想接受记者采访。急诊室的医生说,病人没有生命危险。随后,记者来到发展公司,这里是北京中国国际教育咨询有限公司,公司方舟的办公室,公司锁门。记者在公司的网站上看到中写道,通过系统的专业教育和学谈滑习公司,为国际豪华邮轮培养出来的学生提供高质量,高素质的员工队伍。
PW物业工作人含凳腊员证实,该公司已经建立了几年,已经做了乘务员和其他培训。事件公司的办公室和培训基地在昌平。海淀警方称,具体原因仍在调查。
题目简单,列方程啊。
追问
我不需要你帮我翻译 我也知道用有道- - 如果列不出来 就算了
追答
向家教老师或同学QQ问。
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(Reporter Lihui Bo ) about 10 o'clock yesterday morning , Xue Qing Road , Haidian District, Jing Shu Dong Li district , a parent training with a kitchen knife to chop the head of the company . PW Property staff said ,discount tory burch, the perpetrators at the scene said several times to discuss the dispute because of money without result after such an unwise move .
incident in the Shu Jing Xue Qing Road, Dongli district , Unit 1, 4 layers. Ariake Sea of property , said a staff , was heard shouting upstairs was a fight , he and several security quickly rushed upstairs . Open the door and found a 50 -year-old man sitting on the sofa, coffee table in front of him on a bloody kitchen knife .
Man said the children had received training in this company ,tory burch flip flops, paid thousands of dollars in training costs , he believes the company did not meet the child 's training commitment , intention to return the money , but not before the incident until all the money chase back . He came here and discuss who is responsible for several times,tory burch outlets, finally an unwise move.
head was chopped company has been lying on the living room behind frosted glass , the head with blood . Employees call the emergency telephone. Followed by 999 emergency personnel and Dongsheng police station rushed to the scene. Knives to injure the man by the police control .
Yesterday afternoon , reporters at the Qinghe Emergency Center to see 999 injured . His head was wrapped in gauze , do not want an interview with reporters . Emergency room doctors said the patient no danger . Subsequently, the reporter went to the Development Corporation , here is the Beijing China International Education Consulting Co., Ltd. Ark 's office , the company locked the door . Reporters saw at the Company 's Web site wrote , the company through the system of professional education and learning , the students trained for international luxury cruise lines to provide high quality , high-quality staff .
PW Property staff confirmed that the company has been established a few years , have done flight attendants and other training. Incident to the company's office , and training base in Changping . Haidian Police said the specific cause is still under investigation .
incident in the Shu Jing Xue Qing Road, Dongli district , Unit 1, 4 layers. Ariake Sea of property , said a staff , was heard shouting upstairs was a fight , he and several security quickly rushed upstairs . Open the door and found a 50 -year-old man sitting on the sofa, coffee table in front of him on a bloody kitchen knife .
Man said the children had received training in this company ,tory burch flip flops, paid thousands of dollars in training costs , he believes the company did not meet the child 's training commitment , intention to return the money , but not before the incident until all the money chase back . He came here and discuss who is responsible for several times,tory burch outlets, finally an unwise move.
head was chopped company has been lying on the living room behind frosted glass , the head with blood . Employees call the emergency telephone. Followed by 999 emergency personnel and Dongsheng police station rushed to the scene. Knives to injure the man by the police control .
Yesterday afternoon , reporters at the Qinghe Emergency Center to see 999 injured . His head was wrapped in gauze , do not want an interview with reporters . Emergency room doctors said the patient no danger . Subsequently, the reporter went to the Development Corporation , here is the Beijing China International Education Consulting Co., Ltd. Ark 's office , the company locked the door . Reporters saw at the Company 's Web site wrote , the company through the system of professional education and learning , the students trained for international luxury cruise lines to provide high quality , high-quality staff .
PW Property staff confirmed that the company has been established a few years , have done flight attendants and other training. Incident to the company's office , and training base in Changping . Haidian Police said the specific cause is still under investigation .
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2011-07-22
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