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【判断题】
D.W. 值在 0 和 4 之间,数值越小说明正相关程度越大,数值越大说明负相关程度越大A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】If demand is unit elastic:
A.
Total revenue and prices rise and fall together.
B.
Total revenue rises as price falls.
C.
Total revenue falls as price rises.
D.
Total revenue remains constant as price rises or falls.
【单选题】Demand is unit elastic if elasticity is
A.
less than 1
B.
greater than 1
C.
equal to 1
D.
equal to 0
【简答题】unit elastic demand
【单选题】Demand is said to be unit elastic if_________.
A.
the demand curve shifts by the same percentage amount as the price
B.
quantity demanded changes by the same percent as the price
C.
quantity demanded does not respond to a change in price
D.
quantity demanded changes by a larger percent than the price
【简答题】听力。 1. How much is a ticket for the movie? A. 60 yuan . B. 30 yuan . C. 20 yuan . 2. What is the woman? A. A policewoman. B. A waitress. C. A shop assistant. 3. What did Mary do last night? A. She did...
【单选题】在链表中最常用的操作是删除表中第一个结点和在最后一个结点之后插入元素,则采用 最节省时间。
A.
头指针的单向循环链表
B.
双向链表
C.
尾指针的单向单向循环链表
D.
单链表
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