软件文档不仅是软件开发各个阶段的主要依据,而且也影响软件的( )。
A.可移植性 D.可扩展性 C.可阅读性 D.可维护性
参考答案:D
阅读短文,选择正确答案。
A bird and a duck are playing together. They are going to see their friend, Mr Fox. On the way there, they
meet a river.
The bird says, "We must fly across the river."
The duck says, "No! We must swim across the river."
They can't agree with each other. An old goat comes up and says to them, "You're both right. Birds are good
at flying. Ducks are good at swimming. Don't be too proud! Don't judge things only by your own experience."
1. A bird and a duck are going to .[ ]
A. see their friend
B. swim across the river
C. fly across the river
2. Who is right?[ ]
A. The bird
B. The duck.
C. The goat.
3. Birds are good at , and ducks are good at . [ ]
A. swimming; flying
B. flying; swimming
C. playing; flying
一般情况下所有角度自光线转向光轴度量,()方向为正。
A、顺时针
B、逆时针
C、垂直
D、平行