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【单选题】
已知 则他们的相位关系是( )A.
同相
B.
反相
C.
相等
D.
正交
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【简答题】Choose one or more paragraph(s) from the text "Never, ever give up!" to read.
【简答题】Never, ever give up! When invited to address the patriotic young boys at his old school, Harrow, Britain’s great Prime Minister, Sir Winston Churchill gave this short, clear-cut speech: “Young men, ne...
【单选题】给出如下代码,以下选项中描述错误的是:
A.
range()函数是Python内置函数
B.
代码中n是可选参数
C.
s是局部变量
D.
fact(n)函数功能为求n的阶乘
【单选题】There are some cases _______ students obviously know the school rules but don't obey them.
A.
why
B.
where
C.
as
D.
which
【单选题】There are some cases _______ students obviously know the school rules but don't obey them.
A.
why
B.
where
C.
as
D.
Which
【单选题】给出如下代码,以下选项中描述错误的是:
A.
ls.append(a) 代码中的ls是列表类型
B.
执行代码输出结果为['car', 'truck', 'bus']
C.
执行代码输出结果为['car', 'truck']
D.
代码函数定义中,ls.append(a)中的ls是局部变量
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