có một ngôi nhà mái dốc nhà cao12m mái cao1,5m người ta bố trí 2 kim thu sét dài bằng nhau tại hai đầu hồi khoảng cách ha thu sét là 22m hãy tính chiều cao cảu hai cột thu sét để bảo vệ an toàn cho ngôi nhà

Which of the following could use reverse transcriptase to transcribe its genome? a) ssrnab) dsrnac) ssdnad) dsdna

At 2: 00 am, a 17-year-old boy, accompanied by his 19-year-old girlfriend, had driven to the bar to give his father (who had been drinking large amounts of alcohol) a ride home. on the way back, they were involved in a motor vehicle collision. the boy has a large laceration with profuse bleeding on his forehead. his girlfriend is unconscious in the front passenger floor. the father is standing outside the vehicle, appearing heavily intoxicated, and is refusing care. what is the best way to gain consent to begin care when his father has an altered mental status or is unconscious? a. phone his mother for consent. b. call his grandparents for consent. c. it is a true emergency, so consent is implied. d. you are covered under the good samaritan laws.

China was the world's leading steel producer in 2006. what changes would you expect to be taking place in china?