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【简答题】
当 x=______ 时，分式 1- x 2 1+ x 2 的值等于0．
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反馈参考答案：
举一反三
【单选题】投资环境按其投资地域,可分为()。
A.
本地投资环境与外地投资环境
B.
省内投资环境与省外投资环境
C.
国内投资环境与国外投资环境
D.
境内投资环境与境外投资环境
【单选题】SECTION B CONVERSATIONS In this section you will hear two conversations. At the end of each conversation, five questions will be asked about what was said. Both the conversation and the questions will...
A.
A He saw the advert on a newspaper.
B.
He heard about it from his friend.
C.
He learnt about it from a job centre.
D.
He saw the advert on the Internet.
【简答题】单词拼写 1. I have been trying to ____________ (联络) my uncle but I can't get through. 2. Being unable to move freely, he has learnt to keep his heart open and ____________ (交流) thoughts with his readers. ...
【单选题】He______English for eight years by the time he graduates from the university next year.
A.
will learn
B.
will be learning
C.
will have learnt
D.
will have been learnt
【单选题】投资环境按其投资地域,可分为( )。
A.
国内投资环境与国际投资环境
B.
省内投资环境与省外投资环境
C.
境内投资环境与境外投资环境
D.
本地投资环境与外地投资环境
【多选题】下列关于危险化学品的说法,哪些是正确的?
A.
当其受到一些因素的影响，可能引发严重事故
B.
在一定的外界环境下是安全的
C.
易燃、易爆、有毒、有害及有腐蚀性
D.
会对前期工艺设计造成不利影响
【单选题】投资环境按其投资地域,可分为()。
A.
境内投资环境与境外投资环境
B.
国内投资环境与国外投资环境
C.
省内投资环境与省外投资环境
D.
本地投资环境与外地投资环境
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