单项选择题

Which of the following choices does not belong to industry properties_________?
以下哪个选项不属于行业特征：
A、Economies of Scale
规模经济
B、Barriers to market entry
市场进入壁垒
C、A firm’s core competence
一家企业的核心能力
D、Level of competitiveness
企业间竞争激烈程度

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分析下列程序，写出运行结果。注意：答案必需和程序运行结果完全一致方可得分，包括换行、标点、大小写均需一致！所有符号使用西文输入法，不要有多余空格！
class Meal {
Meal() {
System.out.print("Meal()");
}
}
class Bread {
Bread() {
System.out.print("Bread()");
}
}
class Lunch extends Meal {
Lunch() {
System.out.print("Lunch()");
}
}
class PortableLunch extends Lunch {
PortableLunch() {
System.out.print("PortableLunch()");
}
}
public class Sandwich extends PortableLunch {
Bread b = new Bread();
Sandwich() {
System.out.print("Sandwich()");
}
public static void main(String[] args) {
new Sandwich();
}
}

答案： Meal()Lunch()PortableLunch()Bread()Sandwich()

单项选择题

A、正确
B、错误