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【多选题】
利用幂指函数求极限公式计算极限是练习册第三题求一元函数的极限中第(2)部分中的第( )题,A.
17
B.
18
C.
19
D.
21
E.
23
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举一反三
【单选题】在当前目录存在文本文件test.txt，内容是： Life is short, you need Python. Simple is better than complex. 执行下列语句输出得到的结果是以下哪一项？ with open('test.txt', 'r+') as fp: fp.seek(15) print(fp.readline())
A.
Simple is better than complex
B.
you need Python.
C.
输出为空。
D.
Life is short, you need Python.
【单选题】在当前目录存在文本文件test.txt，内容是：Life is short, you need Python.Simple is better than complex.执行语句fp=open('test.txt','r+')fp.seek(15)printfp.readline()输出得到的结果是以下哪一项？
A.
Life is short, you need Python.
B.
you need Python.
C.
Simple is better than complex.
D.
输出为空。
【单选题】在当前目录存在文本文件 test.txt ,内容是: Life is short, you need Python. Simple is better than complex. 1. with open(‘test.txt’,’r+’) as fp; 2. fp.seek(15) 3. print(fp.readline())
A.
you need Python
B.
Life is short,you need Python
C.
输出为空
D.
Simple is better than complex
【简答题】在当前目录存在存在文本文件test.txt，内容是：Life is short, you need Python. is better than complex.执行如下语句：fp=open('test.txt','r+',0)fp.readline()fp.seek(10,1)print(fp.readline())
【单选题】在当前目录存在文本文件test.txt，内容是：Life is short, you need Python.Simple is better than complex.执行下列语句输出得到的结果是以下哪一项？withopen('test.txt','r+')asfp:fp.seek(15)print(fp.readline())
A.
Life is short, you need Python.
B.
you need Python.
C.
Simple is better than complex.
D.
输出为空。
【单选题】在当前目录存在文本文件test.txt,内容是: Life is short, you need Python. Simple is better than complex. 执行下列语句输出得到的结果是以下哪一项? with open('test.txt', 'r+') as fp: fp.seek(15) print(fp.readline())
A.
you need Python.
B.
Life is short, you need Python.
C.
输出为空。
D.
Simple is better than complex.
【简答题】在当前目录存在存在文本文件test.txt，内容是：Life is short, you need Python. is better than complex.执行如下语句：fp=open('test.txt','rb+',0)fp.readline()fp.seek(10,1)print(fp.readline())fp.close()
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