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【单选题】
关于JAVA中变量或者常量的说法正确的是:(1)常量一旦被初始化就不能被改变(2)变量是由一个标识符命名的量(3)变量的值可以改变(4) 常量的值可以被改变(5)变量可以不存在类型A.
(1)（2)(3)（4)
B.
(1)（2)（3)
C.
（2)(3)（4)
D.
(1)（2)(5)（4)
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反馈参考答案：
举一反三
【单选题】The spoken or unspoken rules that dictate what people should or should not do in particular situations are called .
A.
norms
B.
methods
【判断题】Threats of protectionism, economic nationalism, and local content rules dictate that international businesses manufacture locally.
A.
正确
B.
错误
【单选题】Our teacher says that ______ is not right for us to break the rules of the school.
A.
/
B.
this
C.
it
D.
that
【简答题】如果A={y|y=x 2 -2x+a，x∈R}，B={x|2≤2 2-x ＜8，x∈Z}，如果A∩B=B，则a的取值范围是______．
【简答题】Our world is full of rules. Everyone needs to obey them. But your idea about your school rules? Now many students like to talk about the rules that they have . At their school, they wear uniforms ever...
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