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【单选题】
行列式 ,则第四行各元素余子式之和的值为( ).A.
28
B.
－28
C.
－8
D.
0
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举一反三
【单选题】What is the speaker most likely to talk about next?
A.
The features of the Grotto Falls
B.
The number of the falls in the area
C.
The variety of wild animals
D.
The favorite spots of tourists on the mountain
【简答题】某企业向银行借入一笔款项，银行贷款利率为10%，每年复利一次。银行规定前10年不用还本付息，第11年至第20年年末偿还本息5000元，要求：计算这笔借款的现值。
【单选题】What is the speaker mainly talking about?
A.
How animals survive harsh conditions in the wild.
B.
How animals alter colors to match their surroundings.
C.
How animals protect themselves against predators.
D.
How animals learn to disguise themselves effectively.
【单选题】某企业向银行借入一笔款项,银行贷款的年利率为8%,银行规定前10年不需还本付息,但第11-20年每年年末偿还本息1000元,则这笔款项的现值为多少?
A.
3107
B.
4103
C.
3080
【单选题】What is the speaker mainly talking about?
A.
How animals survive harsh conditions in the wild.
B.
How animals alter colors to match their surroundings.
C.
How animals protect themselves against predators.
D.
Flow animals learn to disguise themselves effectively.
【单选题】What is the speaker mainly discussing?
A.
A business deal
B.
An inventory sale
C.
The company's finances
D.
The appointment of a chairman
【简答题】某企业向银行借入一笔款项，期限5年，贷款利息率为10%，银行规定前2年不用还款付息，从第3年至第5年每年偿还1000元，问这笔款项的现值是多少?
【单选题】What is the speaker mainly talking about?
A.
The problem of global warming.
B.
The difficulty of controlling the temperature at home.
C.
Growing plants indoor.
D.
Dying plants.
【简答题】What is the speaker anxious for? He is anxious for more ______.
【单选题】What is the speaker talking about? 查看材料
A.
The life of tea tasters.
B.
Afternoon tea in Britain.
C.
The London Tea Trade Centre.
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