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【单选题】
函数 f(x)= 3 x - 3 -x 2 在其定义域内是（ ）A.
是增函数又是偶函数
B.
是增函数又是奇函数
C.
是减函数又是偶函数
D.
是减函数又是奇函数
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反馈参考答案：
举一反三
【判断题】TEXT2 Listen and write T before the statements that state the reasons leading GM to take those measures mentioned in the above .( F for not A The cuts are necessary for the company to complete
A.
正确
B.
错误
【单选题】All the staff in our company are considering ________ to the city centre for the fashion show. [ ]
A.
to go
B.
going
C.
to have gone
D.
having gone
【多选题】Which is suitble for a meeting in the company?
A.
suit
B.
T-shit
C.
leather shoes
D.
slippers
【简答题】Express the following operations in the Dutch balance of payments in T-accounts:A Dutch company exports €100,000 goods to a London company for €100,000 in bank deposits.
【单选题】She is said _____in the United States for four years before she came back to work in our company.
A.
to study
B.
to be studying
C.
to have studied
D.
studying
【单选题】15K 时玻璃电极的电极电势与待测溶液酸度的关系式为
A.
玻=K玻+0.0592pH
B.
玻=K玻-0.0592pH
C.
玻=K玻-0.0592[H+]
D.
玻=K玻+0.0592ln[H+]
【简答题】You will hear a conversation between T and A. Listen to the conversation and fill in the blanks. T: What is your job, Ava? A : I'm a 1 in the 2 . T: Which company do you work for? A: I 3 the Health P...
【单选题】15K 时玻璃电极电势与待测溶液酸度的关系式
A.
φ 玻 =K 玻 +0.0592PH
B.
φ 玻 =K 玻 ―0.0592PH
C.
φ 玻 =K 玻 －0.0592[Ｈ ＋ ]
D.
φ 玻 =K 玻 +0.0592[Ｈ ＋ ]
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