软件需求分析中，性能需求指定系统必须满足 (13) 或 (14) 。
（13）处填（）。
A．可靠性
B．定时约束
C．容错能力
D．外部特性
参考答案：B
已知点P在第四象限，且到x轴的距离为2，到y轴的距离为3，则点P的坐标为______．
It is in Steven Spielberg' s first film, Jaws, ____ a big white shark attacks swimmers ____ are spending their holidays in a small village by the sea.
A．where; who
B．which; that
C．that; that
D．where; that
