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【简答题】
如果一个复数的实部和虚部相等，则称这个复数为“等部复数”，若复数 z ＝(1＋ a i)i为“等部复数”，则实数 a 的值为__________.
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举一反三
【单选题】2017年1月29日,一乘客在T站付费区内使用一卡通无法正常出站,经BOM分析显示“尚未进站”,询问乘客进站站点为“A站”,A站至T站票价为4元,此时售票员正确的处理选项有( )。
A.
发售一张4元付费出站票
B.
补进站站点：A站，对IC卡进行更新，乘客持更新后IC卡出站
C.
发售一张免费出站票
D.
收取4元，对IC卡进行更新
【简答题】下级有 做好上级布置的任务。
【单选题】If the quantity supplied responds only slightly to changes in price, then
A.
supply is said to be elastic.
B.
supply is said to be inelastic.
C.
an increase in price will not shift the supply curve very much.
D.
even a large decrease in demand will change the equilibrium price only slightly.
【单选题】2017年1月29日,T站付费区乘客持一卡通无法正常出站 ，经BOM分析显示“尚未进站”，询问乘客进站站点为“A站”,A站至站票价为4元，此时售票员处理正确的是()
A.
发售一张4元付费出站票
B.
补进站站点:A站,对IC卡进行更新，乘客持更新后IC卡出站
C.
发售一张免费出站票
D.
收取4元,对IC卡进行更新
【单选题】If the quantity supplied responds only slightly to changes in price, then_________.
A.
supply is said to be elastic
B.
even a large decrease in demand will change the equilibrium price only slightly
C.
supply is said to be inelastic
D.
an increase in price will not shift the supply curve very much
【单选题】The only variable in the futures contract is price which is discovered on an exchange-trading ___.
A.
ground
B.
house
C.
centre
D.
floor
【单选题】A price ceiling will be binding only if it is set
A.
equal to the equilibrium price.
B.
above the equilibrium price.
C.
below the equilibrium price.
D.
either above or below the equilibrium price.
【单选题】A price ceiling will be binding only if it is set
A.
a. equal to equilibrium price.
B.
b. above equilibrium price.
C.
c. below equilibrium price.
D.
d. none of the above; a price ceiling is never binding.
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