【单选题】设树T的度为4,其中度为1,2,3和4的结点个数分别为4,2,1,1 则T中的叶子数为
【简答题】A.They eat protein. B.They never move from one location. C.They cause erosion of rocks. D.They will never be useful to people.
【简答题】If avian flu HN1 gained the ability to move from person to person, it could cause a ______.
【单选题】The factors that cause the IS curve to move to the right include
A.
Demand for investment increases
B.
Decrease in investment demand
C.
The desire to save increases
D.
Diminished willingness to save
【判断题】衡量一个反应效率的好坏,不能单靠某一指标来确定。应综合转化率和产率两个方面的因素来评定。
【判断题】对于受平面汇交力系的刚体,当力多边形自行封闭,该物体就会与力多边形相同的方向旋转。
【单选题】According to Paragraph 3, how did Southern plantations cause people to move west?
A.
By teaching them the skills they needed to start their own farms.
B.
By promising to supply them with agricultural produce for their journey.
C.
By building factories that destroyed people's farmland.
D.
By severely limiting economic opportunities for small-scale farmers.
【简答题】A.They eat protein. B.They never move from one location. C.They cause erosion of rocks. D.They are found only in deep water.
【判断题】衡量一个反应效率的好坏,不能单靠某一指标来确定。应综合转化率和产率两个方面的因素来评定。
【简答题】(cause to) move smoothly along a suce