垂直管流中气液混合物的四种流态，在井底出现的是（）_采气高级工考试_全学科试题题库

当前学科：采气高级工考试

题目：单选
垂直管流中气液混合物的四种流态，在井底出现的是（）
答案： <查看本题扣1积分>

查看答案

答案不对？请尝试站内搜索

推荐知识点:

固定活检标本的福尔马林浓度是（）

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.” 39.（）

为什么说东都苑（隋西苑）的建成标志着中国园林全盛期的到来？

劳动和社会保障部2003年修订的《国家秘书职业标准》，将秘书职业从低到高划分为四个等级，分别为()。

同一产品的图样可以采用不留装订边和留有装订边两种图纸格式。

生产时，燃烧炉内的温度应达820度以上。

党的各级代表大会的代表受到留党察看以上（含留党察看）处分的，党组织应当终止其代表资格。

军事装备、核设施、航空航天器、铁路机车、海上设施和船舶以及矿山井下使用的特种设备、民用机场专用设备的安全监察不适用《特种设备安全监察条例》。

中国传统社会的经济是自给自足的自然经济。

（）不是无级自动变速器的特点。