按行优先顺序存储下三角矩阵的非零元素,则计算非零元素aij(1≤j≤i≤n)的地址的

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问题:

按行优先顺序存储下三角矩阵的非零元素,则计算非零元素aij(1≤j≤i≤n)的地址的公式为

考点:计算机等级考试数据库技术三级数据库技术笔试
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下列有关美国贸易的叙述,错误的是[ ]

A.美国是世界上输出农产品最多的国家    

B.美国是世界上大量进口粮食的国家

C.美国是世界上进口小汽车最多的国家    

D.美国是世界上出口钢铁最多的国家

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下列关于天然物质水解的叙述正确的是[ ]

A.油脂的水解反应都是皂化反应

B.油脂的水解可得到甘油

C.蛋白质水解的最终产物均为葡萄糖

D.淀粉水解和纤维素水解得到的最终产物不同

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下列导致女性不孕的最严重的病因是()。

A.慢性宫颈炎

B.输卵管炎

C. * * 炎

D.无排卵

E.子宫内膜异位症

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"I would almost rather see you dead. " Bobert S. Cassatt, a leading banker of Philadelphia, shouted when his twenty-year-old eldest daughter announced that she wanted to become an artist. In the 19th century, playing at drawing or painting on dishes was all right for a young lady, but serious work in art was not. And when the young lady’ s family racked among the best of Philadelphia’s social families, such an idea could not even be considered.

That was how Mary Cassatt, born 1844, began her struggle as an artist. She did not tremble before her father’s anger, she opposed him with courage and at last made him change his mind. Mary Cassatt gave up her social position and all thoughts of a thousand and a family, which in those times was unthinkable for a young lady. In the end, after long years of hard work and perseverance, she became America’s most important woman artist and the internationally recognized leading woman painter of the time.

What made Mary Cassatt’ s "struggle" to become a recognized artist especially hard()

A.She was a woman.

B.Her father opposed her.

C.She had no social position.

D.She didn’t come from an artist’s family.

题型:单项选择题

身热不退,朝轻暮重,神识昏蒙,似清似昧,舌苔黄腻,脉濡滑数。辨证为()

A.病在气分

B.病在气营

C.病在气血

D.病在血分

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