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【多选题】
离散型变量的变量值( )。A.
是间断的(非连续的)
B.
表现形式为整数
C.
可以一一列举
D.
相邻数值间不可分割
E.
要用点数的方法取得资料
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反馈参考答案：
举一反三
【单选题】In the last paragraph, Frits van Paasschen holds that
A.
people should always check the balance of their bank accounts.
B.
CEOs should do things to relax themselves to avoid or fix burnout.
C.
workers should pay close attention to their fatigue levels.
D.
CEOs should try to strike a balance between work and life.
【单选题】● Project（）is an uncertain event or condition that ,if it occurs ,has a positive or a negative effect on at least one project objective ,such as time ,cost ,scope or quality（）
A.
risk
B.
problem
C.
result
D.
data
【单选题】When the author mentions the Titanic analogy，
A.
he is in favor of it．
B.
his view is balanced．
C.
he is slighⅡy critical of it．
D.
he is strongly critical of it．
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