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【判断题】
用分支定界法求解一个极大化的整数规划问题，当得到多于一个可行解时，通常可其中一个作为下界值，再进行比较剪支。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】A．initiated B．called C．referenced D．invoked
【单选题】如果某人是杀人犯,那么案发时他肯定在现场。据此,我们可以推出 ( )。 A.张三案发时在现场,所以张三是杀人犯 B.李四不是杀人犯,所以李四案发时不在现场 C. 乙案发时不在现场,所以乙不是杀人犯 D .丙不在案发现场,但丙是杀人犯
A.
B.
C.
D.
D
【单选题】以下代码的输出结果是什么? class A: def __new__(self): self.__init__(self) print("A's __new__() invoked") def __init__(self): print("A's __init__() invoked") class B(A): def __new__(self): print("B's __new__() inv...
A.
B's __new__() invoked A's __init__() invoked
B.
B's __new__() invoked A's __new__() invoked
C.
B's __new__() invoked A's __init__() invoked A's __new__() invoked
D.
A's __init__() invoked A's __new__() invoked
【单选题】下列哪项不是冠心病的超声心动图表现( )
A.
左心室室壁运动减弱、运动消失
B.
左心室室壁局部矛盾运动
C.
左心室壁局部膨出
D.
左心室壁增厚,回声强度均匀
E.
冠状动脉主干管壁回声不规则、不对称和不均匀
【单选题】Which of the following statements is correct?______.
A.
A tight money policy invoked to alleviate inflation conflicts with the goal of correcting a trade deficit.
B.
A tight money policy invoked to alleviate inflation is compatible with the goal of correcting a trade deficit.
C.
An easy money policy invoked to correct a trade deficit conflicts with the goal of reducing inflation.
D.
An easy money policy invoked to improve sluggish economic growth is compatible with the goal of reducing inflation.
【简答题】下面代码段的运行结果是(______) class A:
def __new__(self):
self.__init__(self)
print("A's __new__() invoked")
def __init__(self):
print("A's __init__() invoked")
class B(A):
...
【单选题】What is the output of running class C? class A { public A() { System.out.println( "The default constructor of A is invoked"); } } class B extends A { public B() { System.out.println( "The default cons...
A.
none
B.
"The default constructor of B is invoked"
C.
"The default constructor of A is invoked" followed by "The default constructor of B is invoked"
D.
"The default constructor of A is invoked"
【单选题】What is the output of running class Test? class A { public A() { System.out.println( "The default constructor of A is invoked"); } } class B extends A { public B(String s) { System.out.println(s); } }...
A.
none
B.
"The constructor of B is invoked"
C.
"The default constructor of A is invoked" "The constructor of B is invoked"
D.
"The default constructor of A is invoked"
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