【单选题】以下代码的输出结果是() d={‘food':{'cake':1, egg':5}} print(d. get( 'cake', 'no this food') )
【简答题】There is an old tiger in the forest. He doesn’t want to look for food now. He often asks other animals to get him something to eat. One day, he sees a monkey and says, “I am hungry, monkey. Go to the ...
【单选题】沿地球表面传播的无线电波称为( ),也叫表面波。
【单选题】OLED比LCD性能更高,它具有很多LCD没有的优点,OLED可以()
A.
自发光,它显示出的黑色更纯粹,同时他很轻薄,柔软可弯曲而且也可以自发声
B.
自发光,它显示出的黑色更纯粹,同时他很轻薄,柔软不可弯曲
【多选题】OLED具有 _ ___________等优点 。
【单选题】根据以下材料,回答题。 Spacing in Animals 1 Any observant person has noticed that a wild animal will allow man or other potential enemy to appro.ach only up to a given distance before it flees. 'Flight distance'...
A.
Philosophical distance
C.
Social distance is determined in part by the situation
【判断题】底出光型OLED具有较高的开口率、较高的发光效率。
【单选题】唐诗“夜市卖菱藕,春船载绮罗”“夜雨千灯照碧云,高楼红袖客纷纷”,描写了唐朝夜市的繁荣,彰显盛唐的气象。盛唐的出现是因为统治者( ) 1吸取隋朝灭亡的教训 2任用贤才 3虚心纳谏 4轻徭薄赋
【简答题】膨胀节流管两端都装有 _ _ 以防堵塞。