Melissa Poe Melissa Poe was 9 years old when she (31) a campaign for a cleaner environment by writing a letter to the then President Bush. Through her own efforts, her letter was reproduced on over 250 donated billboards (广告牌) (32) the country. The response to her plea help was so (33) that Poe established Kids For A Cleaner Environment(Kids F.A.C.E.)in 1989. There are now 300,000 (34) of Kids F.A.C. E. worldwide and is the worlds largest youth environmental organization. Poe has also petitioned the National Park Service to (35) a "Children's Forest" project in every national park. In 1992, she was invited as one of only six children in the world to speak at the Earth Summit in Brazil as part of the Voices of the Future Program. In 1993, she was given a Caring Award for her (36) by the Caring Institute. Since the organization started, Kids F. A. C. B. members have distributed and planted over 1 million, trees! Ongoing tree-planting projects include the (37) of Kid's Yards-backyard wildlife habitats(栖息地) -and Kid F.A. C. E. is involved in the exciting Earth Odyssey, which is a great way to start helping. "Starting the club (38) out to be a way to help people get involved with the environment -club members started doing things like recycling, picking up litter and planting trees as well as inviting other kids to join their club." "We try to tell kids that it's not OK to be lazy," she explains."You need to start being a responsible, environmentally (39)person now, right away, (40)you become a resource-sucking adult.” 34.()
目前市场上 POE 反向供电主要采用五类线的()线对来传输。
Melissa Poe Melissa Poe was 9 years old when she (31) a campaign for a cleaner environment by writing a letter to the then President Bush. Through her own efforts, her letter was reproduced on over 250 donated billboards (广告牌) (32) the country. The response to her plea help was so (33) that Poe established Kids For A Cleaner Environment(Kids F.A.C.E.)in 1989. There are now 300,000 (34) of Kids F.A.C. E. worldwide and is the worlds largest youth environmental organization. Poe has also petitioned the National Park Service to (35) a "Children's Forest" project in every national park. In 1992, she was invited as one of only six children in the world to speak at the Earth Summit in Brazil as part of the Voices of the Future Program. In 1993, she was given a Caring Award for her (36) by the Caring Institute. Since the organization started, Kids F. A. C. B. members have distributed and planted over 1 million, trees! Ongoing tree-planting projects include the (37) of Kid's Yards-backyard wildlife habitats(栖息地) -and Kid F.A. C. E. is involved in the exciting Earth Odyssey, which is a great way to start helping. "Starting the club (38) out to be a way to help people get involved with the environment -club members started doing things like recycling, picking up litter and planting trees as well as inviting other kids to join their club." "We try to tell kids that it's not OK to be lazy," she explains."You need to start being a responsible, environmentally (39)person now, right away, (40)you become a resource-sucking adult.” 38.()
Melissa Poe Melissa Poe was 9 years old when she (31) a campaign for a cleaner environment by writing a letter to the then President Bush. Through her own efforts, her letter was reproduced on over 250 donated billboards (广告牌) (32) the country. The response to her plea help was so (33) that Poe established Kids For A Cleaner Environment(Kids F.A.C.E.)in 1989. There are now 300,000 (34) of Kids F.A.C. E. worldwide and is the worlds largest youth environmental organization. Poe has also petitioned the National Park Service to (35) a "Children's Forest" project in every national park. In 1992, she was invited as one of only six children in the world to speak at the Earth Summit in Brazil as part of the Voices of the Future Program. In 1993, she was given a Caring Award for her (36) by the Caring Institute. Since the organization started, Kids F. A. C. B. members have distributed and planted over 1 million, trees! Ongoing tree-planting projects include the (37) of Kid's Yards-backyard wildlife habitats(栖息地) -and Kid F.A. C. E. is involved in the exciting Earth Odyssey, which is a great way to start helping. "Starting the club (38) out to be a way to help people get involved with the environment -club members started doing things like recycling, picking up litter and planting trees as well as inviting other kids to join their club." "We try to tell kids that it's not OK to be lazy," she explains."You need to start being a responsible, environmentally (39)person now, right away, (40)you become a resource-sucking adult.” 35.()
关于PoE的两大标准,下面说法不正确的是()。
铜线是最好的网线材质,并适合于POE供电,电阻小可以避免电在传输过程中的损耗。
简易POE安全可靠,可以方便安装大大提高效率。
软交换系统中,POE接入交换机WS-C2960-24PC-L中,每个端口的供电能力为()
下列哪种设备能使用标准POE交换机供电()
在PoE系统中,提供电源的设备被称为()。