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【单选题】
计算投资项目现金流量时,下列说法正确的是( )。A.
仅考虑项目本身的现金流量
B.
尽量历史的会计利润数据
C.
需要考虑旧设备的历史成本因素
D.
考虑项目对企业其他部门的影响
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【简答题】单词拼写。 1. Going to Malaysia for further education for one month is a very e___________ and exciting experience for me. 2. It's good manners to show r ____________ for the elders. 3. He said that he r__...
【单选题】Thousands of years ago, ten of our very distant ancestors were hungry. They went out and picked berries or dug up roots to eat. Four of them chose poisonous food and died. The remaining six noticed th...
A.
Habit—a Barrier to Progress
B.
The Survival of Mankind
C.
Various Patterns of Human Behavior
D.
We Are Creatures of Habit
【简答题】如图，MN为⊙O的直径，A、B是⊙O上的两点，过A作AC⊥MN于点C，过B作BD⊥MN于点D，P为DC上的任意一点，若MN=20，AC=8，BD=6，则PA+PB的最小值是______．
【简答题】补全对话。从方框中选择最佳选项补全对话，其中有两项多余。 A. Was it exciting B. How was your vacation C. How was the movie D. Frank helped me study it E. Where did you go on vacation F. What did you do last night G. Did you go to...
【简答题】如图，MN为⊙O的直径，A、B是⊙O上的两点，过A作AC⊥MN于点C，过B作BD⊥MN于点D，P为DC上的任意一点，若MN＝20，AC＝8，BD＝6，则PA＋PB的最小值是____．
【单选题】How did researchers know that ancient Greeks rushed to watch the Olympics?
A.
Thousands of people came to watch.
B.
The main stadium is still not big enough.
C.
They have found the related record of events.
D.
Many of them were visitors and pilgrims.
【简答题】已知：如图，直线 交⊙O于A、B两点，AE是⊙O的直径，点C为⊙O上一点，且AC平分∠PAE，过C作 于D. 小题1:求证：CD为⊙O的切线； 小题2:若DC+DA=6，⊙O的直径为10，求AB的长.
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