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【单选题】
P28.面向对象方法中,实现对象的数据和操作结合于统一体中的是A.
结合
B.
封装
C.
隐藏
D.
抽象
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反馈参考答案：
举一反三
【单选题】在MATLAB中,定义x为有理数域上的符号变量的命令是( )
A.
x=sym('x','real'）
B.
x=sym('x','positive'）
C.
x=sym('x','integer'）
D.
x=sym('x','rational'）
【单选题】In most cases, which of the following occupations is NOT exempt from the overtime provisions of the Fair Labor Standards Act?
A.
physicians
B.
engineers
C.
paralegals
D.
teachers
【单选题】In most cases, the reason that products which cost relatively little in one country cost more in another is:
A.
profiteering
B.
nadequate demand
C.
nelastic demand
D.
elastic demand
E.
the costs of exporting
【单选题】Among all the following parameters for organic compounds, which one has the biggest value in most cases?
A.
BOD5
B.
BODu
C.
CODCr
D.
CODMn
【简答题】In most cases, the listening materials are ( ) or ( ). But in reality we listen to far more things, regardless of which language is used.
【简答题】钢的冷处理可以促使残余奥氏体继续转变为 ,提高零件的尺寸稳定性。
【简答题】钢的冷却处理可以促使残余奥氏体继续转变为( ),提高零件的尺寸稳定性。
【单选题】For common municipal wastewater, which of the following parameters has the highest value in most cases?
A.
TS
B.
TDS
C.
TSS
D.
VSS
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