皮皮学，免费搜题
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【单选题】
在空间直角坐标系中,关于方程 下列说法错误的是:
A.
是直线
B.
是平面
C.
是母线平行于z轴的柱面
D.
既是平面又是柱面
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举一反三
【单选题】The first complete DNA sequence of a non-viral, free-living organism was obtained for:
A.
a bacterium in 1900.
B.
a bacterium in 1945.
C.
a bacterium in 1995.
D.
humans in 1990.
E.
humans in 2000.
查看完整题目与答案
【多选题】邓小平提出,在改革中我们必须始终坚持的根本原则是(,2002年)
A.
坚持公有制经济的主体地位
B.
坚持按劳分配与按要素分配相结合
C.
坚持社会主义与市场的结合
D.
坚持共同富裕
E.
坚持多种经济成分共同发展
查看完整题目与答案
【判断题】简单算术平均法主要适用于趋势型数据模式的预测对象。
A.
正确
B.
错误
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【单选题】A sequence of 3 bases in DNA has the sequence CGT. What is the corresponding tRNA anticodon for this sequence? ( )
A.
CGT
B.
GCA
C.
CGU
D.
UCG
查看完整题目与答案
【单选题】热电阻Cu50代表的是：
A.
铂热电阻，其0度时电阻值50欧姆
B.
铂热电阻，其25度时电阻值50欧姆
C.
铜热电阻，其0度 时 电阻值50欧姆
D.
铜热电阻，其25度 时 电阻值50欧姆
查看完整题目与答案
【单选题】In the DNA sequence for sickle cell anaemia, adenine replaces thymine in a CTT triplet, forming the triplet CAT. During synthesis of the sickle cell haemoglobin molecule, the amino acid valine is inco...
A.
CAU
B.
CUA
C.
GAU
D.
GUA
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【单选题】Some chemotherapeutic drugs alter the ability of DNA polymerase to faithfully replicate. For the DNA sequence 5 ′– ATCGATCGATCGATCG – 3 ′ , which one of the following represents the sequence and polar...
A.
5 ′– ATCTATCGATCGATCG – 3 ′
B.
3 ′– ATCGATCGATCGATCG – 5 ′
C.
5 ′– CGAUCGAUCAUCGAU – 3 ′
D.
5 ′– CGATCGATCGATCGAT – 3 ′
E.
3 ′– CGATCGATCGATCGAT – 5 ′
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【单选题】For the DNA sequence , 5'—ATCGATCGATCGATCG—3' Which of the following represents the sequence and polarity of the complementary strand ?
A.
5'—ATCTATCGATCGATCG—3'
B.
3'—ATCGATCGATCGATCG—5'
C.
5'—CGAUCGAUCAUCGAU—3'
D.
5'—CGATCGATCGATCGAT—3'
E.
3'—CGATCGATCGATCGAT—5'
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【单选题】热电阻Cu50代表的是( )
A.
铂热电阻,其0度时，电阻值为50欧姆;
B.
铂热电阻,其25度时，电阻值为50欧姆;
C.
铜热电阻,其0度时，电阻值为50欧姆;
D.
铜热电阻,其25度时，电阻值为50欧姆;
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【单选题】According to the article, what is one reason why scientists are mapping the sunflower DNA sequence?
A.
Because they want to work with experts at the Renewable Fuels Association
B.
Because they want to compare the sunflower genome with the human genome
C.
Because they want to crossbreed a sunflower with corn to create ethanol
D.
Because they want to locate genes responsible for agriculturally important traits
查看完整题目与答案
相关题目：
【单选题】The first complete DNA sequence of a non-viral, free-living organism was obtained for:
A.
a bacterium in 1900.
B.
a bacterium in 1945.
C.
a bacterium in 1995.
D.
humans in 1990.
E.
humans in 2000.
查看完整题目与答案
【多选题】邓小平提出,在改革中我们必须始终坚持的根本原则是(,2002年)
A.
坚持公有制经济的主体地位
B.
坚持按劳分配与按要素分配相结合
C.
坚持社会主义与市场的结合
D.
坚持共同富裕
E.
坚持多种经济成分共同发展
查看完整题目与答案
【判断题】简单算术平均法主要适用于趋势型数据模式的预测对象。
A.
正确
B.
错误
查看完整题目与答案
【单选题】A sequence of 3 bases in DNA has the sequence CGT. What is the corresponding tRNA anticodon for this sequence? ( )
A.
CGT
B.
GCA
C.
CGU
D.
UCG
查看完整题目与答案
【单选题】热电阻Cu50代表的是：
A.
铂热电阻，其0度时电阻值50欧姆
B.
铂热电阻，其25度时电阻值50欧姆
C.
铜热电阻，其0度 时 电阻值50欧姆
D.
铜热电阻，其25度 时 电阻值50欧姆
查看完整题目与答案
【单选题】In the DNA sequence for sickle cell anaemia, adenine replaces thymine in a CTT triplet, forming the triplet CAT. During synthesis of the sickle cell haemoglobin molecule, the amino acid valine is inco...
A.
CAU
B.
CUA
C.
GAU
D.
GUA
查看完整题目与答案
【单选题】Some chemotherapeutic drugs alter the ability of DNA polymerase to faithfully replicate. For the DNA sequence 5 ′– ATCGATCGATCGATCG – 3 ′ , which one of the following represents the sequence and polar...
A.
5 ′– ATCTATCGATCGATCG – 3 ′
B.
3 ′– ATCGATCGATCGATCG – 5 ′
C.
5 ′– CGAUCGAUCAUCGAU – 3 ′
D.
5 ′– CGATCGATCGATCGAT – 3 ′
E.
3 ′– CGATCGATCGATCGAT – 5 ′
查看完整题目与答案
【单选题】For the DNA sequence , 5'—ATCGATCGATCGATCG—3' Which of the following represents the sequence and polarity of the complementary strand ?
A.
5'—ATCTATCGATCGATCG—3'
B.
3'—ATCGATCGATCGATCG—5'
C.
5'—CGAUCGAUCAUCGAU—3'
D.
5'—CGATCGATCGATCGAT—3'
E.
3'—CGATCGATCGATCGAT—5'
查看完整题目与答案
【单选题】热电阻Cu50代表的是( )
A.
铂热电阻,其0度时，电阻值为50欧姆;
B.
铂热电阻,其25度时，电阻值为50欧姆;
C.
铜热电阻,其0度时，电阻值为50欧姆;
D.
铜热电阻,其25度时，电阻值为50欧姆;
查看完整题目与答案
【单选题】According to the article, what is one reason why scientists are mapping the sunflower DNA sequence?
A.
Because they want to work with experts at the Renewable Fuels Association
B.
Because they want to compare the sunflower genome with the human genome
C.
Because they want to crossbreed a sunflower with corn to create ethanol
D.
Because they want to locate genes responsible for agriculturally important traits
查看完整题目与答案