[填空题]

Ancient sailors and farmers did not have satellites and computers to help them forecast the weather. They observe the sky, winds and clouds. Eventually, patterns emerged and people made up sayings to remember them.
We now realize that behind the sayings often lies real science. Here are two time-tested sayings, and the climate reasoning backing them up:
"When the dew (露水) is on the grass, rain will never come to pass," Clear skies at night lower temperatures enough for humidity (湿度) to condense as dew. So a heavy dew forms on a summer night, except a fair day. But ’i when grass is dry before the morning light, look for rain before night." This is especially true if temperatures rise during the night as a result of increasing cloud cover. "If night has a fever, it cries in the morning."
If with your nose you smell the day, some weather is on the way. Plants release oil into the atmosphere, and research indicates that t

最新试题

• ●    [填空题]《空调列车服务质量规范》中无备品柜或备品柜容量不足的，硬卧车定位放置在
• ●    [判断题]3.211.第211题当母线保护检修压板与母联间隔MU检修压板不一致,则闭锁母线保护
• ●    [判断题]大气式燃烧火焰的稳定性主要指不回火、不离焰、不脱火。
• ●    [单选题]釜式反应器的换热方式有夹套式蛇管式回流冷凝式和( )
• ●    [多选题]根据《政府采购法》的规定，在政府采购项目招标过程中，采购人应宣布废标的情形有( )。
• ●    [判断题] 行车有关人员,应进行日常安全生产知识和劳动纪律的教育、考核,并有计划地组织好在职人员的日