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【单选题】
对于构造方法,下列叙述正确的是:A.
构造方法的方法名必须与类名相同
B.
构造方法必须用void申明返回类型 (没有返回类型)
C.
构造方法可以被程序调用
D.
若编程人员没再类中定义构造方法,程序将报错
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【简答题】求由摆线 x = a ( t - sin t ) , y = a (1 - cos t ) 的一拱 (0 £ t £ 2 p ) 与横轴所围成的图形的面积 .
【简答题】In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be____36____ . Today things are___37_____, the world...
【单选题】— 2008 is drawing near. Any changes in Beijing? — Yes, more stadiums arc being built, and ______ people are learning English. [ ]
A.
more and more
B.
the more and the more
C.
the more and more
D.
more and the more
【单选题】Were there any sesame streets in 1969?
A.
Yes, they taught Children.
B.
No, they were imaginary.
C.
Yes, they were in the South Africa.
D.
No, they were in the future.
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