Talk about the difference between an Abstract class and an Interface.
Talk about the difference between an Abstract class and an Interface.
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Evaluate this SQL statement:In the statement, which capabilities of a SELECT statement are performed?() A. Selection, projection, joinB. Difference, projection, joinC. Selection, intersection, joinD. Intersection, projection, joinE. Difference, projection, product
3．Is her lifestyle. the same as yours or ________? What are the________?A． difference， differentB． different ，differenceC． different ，differencesD． difference ， differences
A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week according to the National Weather Service.According to the NWS a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.Temperatures across the Midwest will drop into the 60s and 70s-a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and WashingtonThe cool breezes may be a welcome relief this time around but remember the last few times we got hit with Arctic air？Temperatures in cities including Chicago Cleveland New York and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we’re sure you rememberWhat’s the temperature when the report was written?A. About 60s and 70sB. Between 60s and 90sC. Below 60sD. About 80s and 90s
资料：We never thought we'd say this, but we'd welcome back some chilly weather.A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.According to the NWS, a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington.The cool breezes may be a welcome relief this time around, but remember the last few times we got hit with Arctic air?Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we're sure you remember.What’s the temperature when the report was written?A.About 60s and 70s.B.Between 60s and 90s.C.Below 60s.D.About 80s and 90s.
Between 1845 and 1854,about 1.5 million Irishmen emigrated to United States because of（）AfamineBEnglish oppressionCwarDBoth AB
以下关于abstract的说法，正确的是A．abstract只能修饰类B．abstract只能修饰方法C．abstract类中必须有abstract方法D．abstarct方法所在的类必须用abstract修饰
以下关于abstract的说法，正确的是（)A．abstract只能修饰类B．abstract只能修饰方法C．abstract类中必须有abstract方法D．abstarct方法所在的类必须用abstract修饰