随着高技术的迅速发展,技术的军用民用界限变得越来越模糊。
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新型银离子抗菌敷料所含的银形态为(),每个化合物带有4个银离子,是不断吸收渗出液而持久稳定的释放过程,释放出来的是100%的银离子。而()是一种特定大小的银单质,本身没有杀菌作用,所以使用前需要用纯水来激活,又因为其是快速大量的释放,所以形成硫化银或氯化银的黑色沉淀。
低应变法检测中,对于嵌岩桩,桩底时域反射信号为单一反射波且与锤击脉冲信号反向时,应采取其他方法核验桩底嵌岩情况。
A. 正确
B. 错误
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.” 37.()
A. creation
B. across
C. implement
D. before
E. members
F. began
G. turned
H. purpose
I. overwhelming
J. efforts
K. friendly
L. professional