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【单选题】
在下列溶液中缓冲容量最大的是 ( )A.
1.0mol/L HAc
B.
0.1mol/L HA c － 0.1mol/LNaAc
C.
0.1mol/L HA c － 0.01mol/LNaAc
D.
1.0mol/LNaOH
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举一反三
【简答题】外汇汇率的标价方法有（ ）。
【单选题】经批准开业的饭店,如有歇业、转业、合并、迁移、改变名称等情况,应当在工商行政管理部广]办理变更登记后( ) 内,向当地的县市公安局、公安分局备案。
A.
3日
B.
3个工作日
C.
5日
D.
5个工作日
【单选题】Which of the following are disadvantages of flexible budgets? 1 They are not very useful for decision-making 2 They are more time consuming to prepare than fixed budgets 3 They fail to provid...
A.
2 and 4 only
B.
2,3 and 4 only
C.
1,2 and 3 only
D.
1,3 and 4 only
【简答题】听对话,选答案。 1. What are they doing now? A. They are having a class at school. B. They are a phone call. C. They are talking in a restaurant. 2. Why didn't Liu Mei go to school today? A. Because sh...
【判断题】The students should make sure that they are qualified for a particular scholarship before making an application.
A.
正确
B.
错误
【简答题】They are an _____________ of 10% off to all the customers who place an order before June 1st.
【简答题】If they are a journey by bus, they will do their best to find an empty seat; if by train, an empty_______.
【单选题】Which of the following are disadvantages of flexible budgets? 1 They are not very useful for decision-making 2 They are more time consuming to prepare than fixed budgets 3 They fail to provid...
A.
2 and 4 only
B.
2,3 and 4 only
C.
1,3 and 4 only
D.
2 and 3 only
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