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【多选题】
挥发油易溶于溶剂有()A.
乙醚
B.
苯
C.
水
D.
石油醚
E.
酸水
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举一反三
【简答题】Task 4 A guest comes to the Front Desk. He wants to extend his stay. Listen to the conversation and fill in the form with the information you hear. Guest name: _________________
【简答题】Write a program that outputs the following information : a\\b\?de
【单选题】执行如下代码：fname = input("请输入要写入的文件: ")fo = open(fname, "w+")ls = ["清明时节雨纷纷，","路上行人欲断魂，","借问酒家何处有？","牧童遥指杏花村。"]fo.writelines(ls)fo.seek(0,0)for line in fo: print(line)fo.close()以下选项中描述错误的是
A.
代码主要功能为向文件写入一个列表类型，并打印输出结果
B.
执行代码时，从键盘输入 “ 清明 .txt” ，则清明 .txt 被创建
C.
fo.seek(0,0) 这行代码如果省略，也能打印输出文件内容
D.
fo.writelines(ls) 将元素全为字符串的 ls 列表写入文件
【单选题】Either the ways or the time ____ yet, but you may ask the headmaster for some information．
A.
isn’t decided
B.
hasn’t decided
C.
aren’t decided
D.
haven’t decided
【简答题】当负载电阻等于多少时可以获得最大功率?并写出最大功率的公式
【单选题】You had better buy this newspaper, because it________much information about the earthquake. [ ]
A.
deals
B.
covers
C.
holds
D.
fills
【简答题】If the estimates of the U.S. Energy Information Administration about oil reserve in the deserts in western Iraq are true, the deposit of oil in Iraq will amount to______ .
【简答题】判断文献出版类型 : Smith,W. Retrieving art images by image content: the UC Davis QBIC project. Proc First International Conference on Electronic Library and Visual Information System Research, de Montfort Uni...
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