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乐山师范学院应用统计学
There are 20 blanks in the following passage. For each blank there are four choices marked A), B),
C) and D). You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the answer sheet. Generally speaking, a
British is widely regarded as a quiet, shy and conservative person who is 36 only among those with whom he is acquainted. When a stranger is at
present, he often seems nervous, 37 embarrassed. You have to take a commuter train any morning or evening to 38 the truth of this. Serious-looking
businessmen and women sit reading their newspapers or dozing in a corner; hardly anybody talks, since to do so would be considered quite offensive. 39
, there is an unwritten but clearly understood code of behavior which, 40 broken, makes the offender immediately the object of 41. It has been known as
a fact that the British has a 42 for the discussion of their weather and that, if given a chance, he will talk about it 43. Some people argue that it is because
the British weather seldom 44 forecast and hence becomes a source of interest and 45 to everyone. This may be so. 46 a British cannot have much 47 in
the weathermen, who, after promising fine, sunny weather for the following day, are often proved wrong 48 a cloud over the Atlantic brings rainy
weather to all districts! The man in the street seems to be as accurate---or as inaccurate---as the weathermen in his 49. Foreigners may be surprised at
the number of references 50 weather that the British make to each other in the course of a single day. Very often conversational greetings are 51 by
comments on the weather. “Nice day, isn’t it?” “Beautiful!” may well be heard instead of “Good morning, how are you?” 52 the foreigner may consider
this exaggerated and comic, it is worthwhile pointing out that it could be used to his advantage. 53 he wants to start a conversation with a British but is
54 to know where to begin, he could do well to mention the state of the weather. It is a safe subject which will 55 an answer from even the most
reserved of the British. 36.
A. relaxed
B. frustrated
C. amused
D. exhausted
There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D). You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the answer sheet. Generally speaking, a British is widely regarded as a quiet, shy and conservative person who is 36 only among those with whom he is acquainted. When a stranger is at present, he often seems nervous, 37 embarrassed. You have to take a commuter train any morning or evening to 38 the truth of this. Serious-looking businessmen and women sit reading their newspapers or dozing in a corner; hardly anybody talks, since to do so would be considered quite offensive. 39 , there is an unwritten but clearly understood code of behavior which, 40 broken, makes the offender immediately the object of 41. It has been known as a fact that the British has a 42 for the discussion of their weather and that, if given a chance, he will talk about it 43. Some people argue that it is because the British weather seldom 44 forecast and hence becomes a source of interest and 45 to everyone. This may be so. 46 a British cannot have much 47 in the weathermen, who, after promising fine, sunny weather for the following day, are often proved wrong 48 a cloud over the Atlantic brings rainy weather to all districts! The man in the street seems to be as accurate---or as inaccurate---as the weathermen in his 49. Foreigners may be surprised at the number of references 50 weather that the British make to each other in the course of a single day. Very often conversational greetings are 51 by comments on the weather. “Nice day, isn’t it?” “Beautiful!” may well be heard instead of “Good morning, how are you?” 52 the foreigner may consider this exaggerated and comic, it is worthwhile pointing out that it could be used to his advantage. 53 he wants to start a conversation with a British but is 54 to know where to begin, he could do well to mention the state of the weather. It is a safe subject which will 55 an answer from even the most reserved of the British.
设 阶方阵 具有 个不同的特征值是 与对角阵相似的( ) A. 充分必要条件； B. 充分而非必要条件； C. 必要而非充分条件； D. 即非充分也非必要条件。
设f(x)为3次实系数多项式,则 A. f(x)至少有一个有理根 B. f(x)至少有一个实根 C. f(x)存在一对非实共轭复根 D. f(x)有三个实根.
若 |a a a b b b c c c|=m,则 ( ). A. 30m B. -15m C. 6m D. -6m
是n维复空间V的两个子空间,且 ,则dimW1=r1,dimW=r2,则W1+W2的维数为( ) A.=r1+r2 B.>r1+r2 C.max<=dim<=min
设A,B为任意两个n级方阵,则如下等式成立的是 A.(A+B)2=A2+2AB+B2 B.|A+B|=|A|+|B| C.|AB|=|B||A| D.|A-B|=|A||B|
设 n阶矩阵A的行列式 , 是 的伴随矩阵,则( ) A. (A)=|A|N-1A； B.(A)= |A|N+1A； C.(A)= |A|N-2A ； D. (A)= |A|N+2A。
一个n(>=2)级方阵A经过若干次初等变换之后变为B, 则一定有 A.|A|=|B| B. Ax=0与Bx=0 同解 C. 秩(A)= 秩(B) D.A=B
设向量组∂1,∂2线性无关,则向量组 线性无关的充分必要条件为 A.ad不等于bc B.ad=bc C.ab不等于cd D.ab=cd
对于n元方程组,下列命题正确的是( ). A. 如果 只有零解,则 也只有零解 B. 如果 有非零解,则 有无穷多解 C. 如果 有两个不同的解,则 有无穷多解 D. 有唯一解的充分条件是
设向量组线性无关, 线性相关,则( ). A. 一定能由 线性表示 B. 一定能由 线性表示 C. 一定不能由 线性表示 D. 一定不能由 线性表示
∂是线性空间V上的线性变换, ,那么 ∂关于V的基 的矩阵 是 ( ) A.200-110011 B.2-10011100 C.21011100-1 D2-10111000
如果把 代入实二次型 都有 ,那么f是 ( ) A. 正定 B. 负定 C. 未必正定
若矩阵A的不变因子为 , 则A的全部初等 因子为 ( ) A.(x-1)2 B.(x-1) C(
There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D). You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the answer sheet. Generally speaking, a British is widely regarded as a quiet, shy and conservative person who is 36 only among those with whom he is acquainted. When a stranger is at present, he often seems nervous, 37 embarrassed. You have to take a commuter train any morning or evening to 38 the truth of this. Serious-looking businessmen and women sit reading their newspapers or dozing in a corner; hardly anybody talks, since to do so would be considered quite offensive. 39 , there is an unwritten but clearly understood code of behavior which, 40 broken, makes the offender immediately the object of 41. It has been known as a fact that the British has a 42 for the discussion of their weather and that, if given a chance, he will talk about it 43. Some people argue that it is because the British weather seldom 44 forecast and hence becomes a source of interest and 45 to everyone. This may be so. 46 a British cannot have much 47 in the weathermen, who, after promising fine, sunny weather for the following day, are often proved wrong 48 a cloud over the Atlantic brings rainy weather to all districts! The man in the street seems to be as accurate---or as inaccurate---as the weathermen in his 49. Foreigners may be surprised at the number of references 50 weather that the British make to each other in the course of a single day. Very often conversational greetings are 51 by comments on the weather. “Nice day, isn’t it?” “Beautiful!” may well be heard instead of “Good morning, how are you?” 52 the foreigner may consider this exaggerated and comic, it is worthwhile pointing out that it could be used to his advantage. 53 he wants to start a conversation with a British but is 54 to know where to begin, he could do well to mention the state of the weather. It is a safe subject which will 55 an answer from even the most reserved of the British.
设 阶方阵 具有 个不同的特征值是 与对角阵相似的( ) A. 充分必要条件； B. 充分而非必要条件； C. 必要而非充分条件； D. 即非充分也非必要条件。
设f(x)为3次实系数多项式,则 A. f(x)至少有一个有理根 B. f(x)至少有一个实根 C. f(x)存在一对非实共轭复根 D. f(x)有三个实根.
若 |a a a b b b c c c|=m,则 ( ). A. 30m B. -15m C. 6m D. -6m
是n维复空间V的两个子空间,且 ,则dimW1=r1,dimW=r2,则W1+W2的维数为( ) A.=r1+r2 B.>r1+r2 C.max<=dim<=min
设A,B为任意两个n级方阵,则如下等式成立的是 A.(A+B)2=A2+2AB+B2 B.|A+B|=|A|+|B| C.|AB|=|B||A| D.|A-B|=|A||B|
设 n阶矩阵A的行列式 , 是 的伴随矩阵,则( ) A. (A)=|A|N-1A； B.(A)= |A|N+1A； C.(A)= |A|N-2A ； D. (A)= |A|N+2A。
一个n(>=2)级方阵A经过若干次初等变换之后变为B, 则一定有 A.|A|=|B| B. Ax=0与Bx=0 同解 C. 秩(A)= 秩(B) D.A=B
设向量组∂1,∂2线性无关,则向量组 线性无关的充分必要条件为 A.ad不等于bc B.ad=bc C.ab不等于cd D.ab=cd
对于n元方程组,下列命题正确的是( ). A. 如果 只有零解,则 也只有零解 B. 如果 有非零解,则 有无穷多解 C. 如果 有两个不同的解,则 有无穷多解 D. 有唯一解的充分条件是
设向量组线性无关, 线性相关,则( ). A. 一定能由 线性表示 B. 一定能由 线性表示 C. 一定不能由 线性表示 D. 一定不能由 线性表示
∂是线性空间V上的线性变换, ,那么 ∂关于V的基 的矩阵 是 ( ) A.200-110011 B.2-10011100 C.21011100-1 D2-10111000
如果把 代入实二次型 都有 ,那么f是 ( ) A. 正定 B. 负定 C. 未必正定
若矩阵A的不变因子为 , 则A的全部初等 因子为 ( ) A.(x-1)2 B.(x-1) C(