A. oxygen (氧气) B. carbon dioxide (二氧化碳) C. nitrogen (氮气) D. hydrogen (氢气) 相关知识点: 试题来源: 解析 C 正确答案:C 解析:大气的主要成分是氮气(nitrogen)哦,大概占大气总成分的78%左右, 而氧气(oxygen)只占20%左右,剩余的2%由二氧化碳(carbon dioxide)等其他气体组成。反馈 收藏 ...
39It is not a place for the faint-hearted of the gentle, but to many, they are fun and thrilling places to explore. It is truly an exciting experience and a feast for the eyes on a tropical night out. The atmosphere is almost festive....
百度试题 题目 选择下划线用法错误的选项。 The nitrogen makes up over 78 percent of the Earth's atmosphere, the gaseous mass surrounds the planet. A.nitrogenB.overC.percentD.surrounds 相关知识点: 试题来源: 解析 AD 反馈 收藏
Aberdeencityhasanamazingpublictransportsystem,bothdayandnight,althoughexploringthestreetsbyfootisagreatwaytoexperiencetheatmosphereofthisdynamiccity.Driving aroundiseasy,butifyoudon?thaveacar,buses andtrainswilleasilytakeyoutoyourdestination. 1.WheredoesAberdeenlie? A.Faroffthecoast. B.Tothewestofthesea. C....
轮机英语题库翻译.pdf,第一章 船舶动力装置 0001 Before disconnecting the Oil pipe , would y lu ipe ? ” asked the oil barge owner. 0001 B ou f sh th a ned in the p e oil ret i y n A. b usi g o fres f h water (用淡水) wi pres 缩气 B. th com sed air (
airfoam balance airgas proportioner airasia ak airatmosphereairspace airbellscurtain airblast heater airbleedercap airblue 202 airbomb airborn noise airborne battlefield airborne dust level airborne infrared hig airborne operation airborne particulate airborne television s airbornetroops-hoodlu airborneinfrared...
festivities. On the first day of chunyun, hustles and bustles are on vivid display across the country's railway stations and airports, as millions of passengers - carrying bags filled with gifts and treats - embark on homecoming trips in an atmosphere charged with joy and the festive spirit...
Remembering that I’ll be dead soon is the most important tool I’ve ever encountered to help me make the big choices in life. Because almost everything - all external expectations, all pride, all fear of embarrassment or failure - these things just fall away in the face of death, leavin...
Lightning is a strong burst of electricity in the atmosphere. It can strike between clouds or between a cloud and the ground. Since lightning carries an extremely powerful electrical charge, it can be destructive and deadly. It is difficult to know exactly how many people die of lightning-relat...
Up until very recently, Erie would swim across the deep and cold Clear Lake almost daily in the warmer months. One day while swimming, she even startled some US Marines who were fishing in a boat in the lake. They were very impressed by her swimming ability!