根据Xu traveled mostly on foot.He slept and ate in the wild.He was robbed three times.Sometimes he fell into rivers or ran into dangerous animals.But Xu was not afraid and enjoyed his journey.许多时候都是徒步旅行,他在野外睡觉和吃饭,三次被抢劫,有时会掉进河里或者遇到危...
Final stretching may be to 105 to 125 times the initial length and may be conducted at 100- 260 C. In examples:-(1) a copolymer of 90% acrylonitrile and 10% methyl acrylate and a copolymer of 88% acrylonitrile and 12% methyl acrylate are separately dissolved in 50% aqueous sodium ...
al. (65) had elite athletes live at 2,500 m for 18 h−1 and train at 1,000–1,800 m for 24 days and showed increased serum erythropoietin, hemoglobin, RBC, and hematocrit, and these changes were associated with an increase in Vo2ma and improved 5,000-m running times Wehrlin等。
The elephant is three times heavier than the horse. The horse is 500 kilograms. How heavy is the elephant? A. 1500 kilograms B. 1000 kilograms C. 2000 kilograms D. 2500 kilograms 相关知识点: 试题来源: 解析 A。本题考查比较级和最高级倍数表达,大象是马的三倍重,已知马 500 千克,所以大象...
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题目The coast of the State of Maine is one of the most irregular in the world.A straight line running from the southernmost coastal city to the northernmost coastal city would measure about 225miles.If you followed the coastline between these points,you would travel more ...
定语从句修饰先行词times,在从句中作时间状语,故用when引导。故填when。 (2)题详解: 考查名词。句意:许多科学家说,我们正在进入地球的第六次大灭绝。根据前面的Many可知,空处要用复数形式。可数名词scientist意为“科学家”,故填scientists。 (3)题详解: 考查冠词。句意:这么多物种灭绝的原因有很多。此处为...
2. 根据第1题的积,写出h^{2}下面3道算式的得数。18\times 5=9018\times 50=18\times 500=180\times 50=
根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整。(每空一词) Yangzhou is a historical and cultural city with a h___86___ of 2,500 years. In ancient times, the buildings of the Han Canal(邗沟)and the Grand Canal(大运河) p___87___ conv
合成氨工业的核心反应是:N2(g)+3H2(g)⇌2NH3(g)△H=“Q“kJ•mol-1,能量变化如图所示,回答下列问题: (1)在500℃、2×107 Pa和催化剂条件下向一密闭容器中充入0.5mol N2和1.5mol H2,