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【判断题】
古代所谓“八音”指“丝、竹、金、石、匏、土、革、木”八种不同质地的乐器发出的声音。A.
正确
B.
错误
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【单选题】某企业生产甲产品，采用定额法计算产品成本，本月份甲产品应分配的直接材料费用为24050元，原材料消耗定额为115千克/件，计划单价4.50元/千克，本月投产50件产品，则本月投产产品直接材料脱离定额差异的计算结果为()。
A.
-1875
B.
-1825
C.
25875
D.
24050
【单选题】某企业生产甲产品，采用定额法计算产品成本，本月份甲产品应分配的直接工资为2350元，本月投入的定额工时为6650小时，计划单价0.37元/小时，则本月甲产品的直接工资定额差异计算结果为()。
A.
2460.50
B.
110.50
C.
-110.50
D.
-2460.50
【简答题】设A为n阶实对称矩阵，且存在m，使A[supmsup]=O.证明：A=O.
【单选题】Which of the following statements about O. Henry is incorrect?
A.
The stories of O. Henry are known for their sudden endings.
B.
O. Henry presents the panorama of the American people with ironic and humorous tone.
C.
O. Henry was the first American man of letters to be known by the world.
D.
O. Henry uses the civilian language unlike Mark Twain.
【单选题】Which one is Not correct about O. Henry?
A.
O. Henry was known as "Encyclopedia of American life with humor."
B.
O. Henry's ending means the ending of the article makes sense, unexpected but logical and convincing.
C.
O. Henry's real name is Williams Sydney Porter.
D.
O. Henry is known as a humorous and realistic poet.
【单选题】某企业生产甲产品，采用定额法计算产品成本，本月份甲产品应分配的直接材料费用为24050元，材料成本差异为-1%，原材料消耗定额为115千克/件，计划单价4.50元/千克，本月投产50件产品，则本月投产产品直接材料脱离定额差异合计的计算结果为()。
A.
2065.50
B.
1584.5
C.
-1584.5
D.
-2065.50
【简答题】O. Henry, a famous American writer of short stories, was born in North Carolina in 1862. O. Henry was a pen name. His real name was William Sydney Porter. When he was a young boy, he did not go to sch...
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