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【单选题】
对于自由符号变量说法错误的是()A.
小写字母i，j, pi, inf, nan, eps不能作为自由变量
B.
符号表达式中如果有多个符号变量首先选择x作为自由变量；
C.
符号表达式中如果有多个符号变量，如果没有x，则选择在字母顺序中最接近x的字符变量；
D.
符号表达式中如果有多个符号变量，如果与x相同距离，则在x前的优先
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举一反三
【单选题】All you have to do is to fill out this form.
A.
主语从句
B.
表语从句
C.
宾语从句
D.
定语从句
E.
状语从句
F.
同位语从句
【简答题】旅游是非功利性的,为何又有“商务旅游”、“会议旅游”等称呼?其根据的标准是什么?
【单选题】Ethers can be readily prepared via a two-step process called a Williamson ether synthesis. The first step of this reaction is to form alkoxide. Which of the following compound can be used to complete ...
A.
KOH
B.
NaH
C.
NaOH
【单选题】Section A Directions: This section is to test your ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. The dialogues and the...
A.
The skin cancer is easy to cure.
B.
The skin cancer is a common cancer.
C.
The skin cancer need not be worried about.
D.
The skin cancer is rare.
【简答题】产品组合的是指产品线中每一产品所含不同花色、规格和质量的产品数目的多少。
【简答题】This part is to test your ability to do practical writing. You are required to E-MAIL to the Manager of Malaysia Textiles Company. Some information and the e-mail form. are given to you. Remember to w...
【单选题】Section B Directions: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it. After each conversation, there are some recorded questions. The ...
A.
She has experience of office work.
B.
She likes young people, and wants to get some experience on teaching.
C.
She likes working independently.
D.
The salary is very attractive.
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