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【单选题】
关于Python字符串,以下选项中描述错误的是A.
可以使用datatype()测试字符串的类型
B.
输出带有引号的字符串,可以使用转义字符\
C.
字符串可以保存在变量中,也可以单独存在
D.
字符串是一个字符序列,字符串中的编号叫“索引”
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反馈参考答案：
举一反三
【多选题】二极管的V-I特性包含正向特性、反向特性和击穿特性,正向特性有两个很重要的参数,分别是( )、( )。
A.
反向击穿电压
B.
导通压降
C.
反向饱和电流
D.
死区电压
【简答题】Complete the following dialogue.( 补全对话 ) 。 A: What can I do for you? B: Yes, please. 1 But what kind of flowers should I buy, roses or cartons( 康乃馨 )? She likes red roses best , but today is Mother's ...
【单选题】以下( )股票是指,在中国境外注册、在中国香港上市,但主要业务在中国内地或者大部分股东权益来自内地公司的股票。
A.
外资股
B.
红等股
C.
“H股”
D.
“B股“”
【简答题】什么是二极管的反向特性和反向击穿电压?
【简答题】听短文，根据短文内容选择正确答案。 1. Mr Smith asked the shopkeeper to send a lot of roses to the girl because . A. She had asked him to do so B. He wanted to show his love for her C. She loved flowers very much 2. Ho...
【单选题】Conversation 2--- 3. What do the roses, the lions and the other elements in Stella’s design represent?
A.
The different stages of British football team.
B.
The different stages of British history.
C.
The different disciplines of sports in Britain.
D.
The different parts of the British Isles.
【单选题】What do the roses, the lions and the other elements in Stella’s design represent?
A.
The different stages of British football team.
B.
The different stages of British history.
C.
The different disciplines of sports in Britain.
D.
The different parts of the British Isles.
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