【单选题】What’s the main reason for Americans to go out to eat?
A.
They can meet with many friends.
B.
They can have cheaper food there.
C.
They can save time by not cooking.
D.
They can avoid washing dishes after the meal.
【简答题】A.They shine brightly. B.They are extremely strong. C.They can store heat. D.They can absorb water.
【简答题】A.They can buzz in to kill. B.They can hear the dry plants' cries. C.They can imitate the plants' crying. D.They can attack healthy plants in dry, hot weather.
【单选题】What can they do in the kitchen? [ ]
A.
They can cook the meals.
B.
I can sweep the floor.
C.
They can clean the bedroom.
【单选题】What can robots do in unpleasant surroundings?
A.
They can take the lunch breaks.
B.
They can have the vocation.
C.
They can work 24 hours a day.
D.
They can go on strike.
【判断题】当网络的数据流量或交通流量超过网络的额定容量时,将引起网络的吞吐能力急剧下降,称为网络拥塞现象。()
【单选题】当网络的数据流量或交通流量超过网络的额定容量时,将引起网络的吞吐能力急剧下降,这时必须进行网络( )。
【简答题】A.They shine brightly. B.They are extremely strong. C.They can store heat. D.They Can absorb water.
【单选题】当网络的数据流量或交通流量超过网络的额定容量时,将引起网络的吞吐能力急剧下降,这时必须进行网络( )。