相关考题
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判断题
外部经济说明私人成本低于社会成本。 -
单项选择题
class One { public One() { System.out.print(1); } } class Two extends One { public Two() { System.out.print(2); } } class Three extends Two { public Three() { System.out.print(3); } } public class Numbers{ public static void main( String[] argv) { new Three(); } } What is the result when this code is executed?()
A. 1
B. 3
C. 123
D. 321
E. The code rims with no output. -
填空题
根据证明对象所属领域不同,可以将证明分为()、()