已知某一个X原子的质量为9.296×10X原子的质量为9.296×10 -26 Kg，一个碳原子的质量为1.993×10 -26 Kg，又知X原子中的质子数目比中子数目少4个. 求：（1）X原子的相对原子质量（结果保留整数）. （2）X原子的电子数是多少.
If you've spent much time at airports in the United Kingdom, particularly in the North of England, the chances are that you will have come across Jet2. With its characteristic silver and red aircraft, Jet2 ranks among the largest scheduled airlines in the UK, behind the likes of British ...
British Airways and easyJet are. • Fly midweek While the US leisure market is on fire, Miller says, business travel hasn’t quite caught up – though it’s getting there. That means that for the moment, fares are still lower midweek. You may find less chaos, too – Grenville-...
When demand is strong, airlines in theory will sell more seats and on average charge more for them. However, when demand decreases, the airlines have a tough call to make: sell seats at a cheaper price to keep planes full or cut supply while increasing fares resulting in ...
JetBlue proved phenomenally successful. It set a new tone in airline travel: easy, fun, normal. Maybe David Neeleman is the one we should blame for making such an unnatural activity seem so natural. It’s just transportation, people! With T.V. and good snacks. The legacy carriers were st...
Supermodel Kate Moss was escorted off an easyJet plane by police in 2015 when, returning from a vacation in Turkey, she got a little too merry, allegedly swigging from her own bottle of vodka onboard and calling thepilot a “basic bitch.” ...
But here in Britain, everyone appeared to be drinking all the time, as if stupefied excess was something of a national sport.There was the bleary-eyed young man I met on a 6am easyJet flight to Prague, for example, whose breakfast three cans of Kronenbourg was lined up on the tray in...
Several experts in the pharmaceutical field have also suggested that the short supply of many cheap, commonly used drugs may be down to the economic strategy of the manufacturing company. Philippe Lamoureux, director general of pharmaceutical companies association LEEM told Le Monde that “...
And much of Spain is experiencing the same property boom.Cheap flights (Ryanair, Buzz, EasyJet, Go, Monarch and British Midland) have made a holiday home in the sun easily accessible.Pick up some of the language, spend long, hot summers and the odd winter break in your holiday hideaway...