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【单选题】
沉积土由不同的粗细颗粒组成，其承载力和压缩性不同，下列何种说法是不正确的？
A.
细颗粒组成的土层，其压缩性高
B.
细颗粒组成的土层，其承载力低
C.
粗颗粒组成的土层，其压缩性高
D.
粗颗粒组成的土层，其承载力高
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参考答案：
举一反三
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______. ( )
A.
has a great deal of trouble doing mental arithmetic
B.
lacks some of the qualities required of a scientist
C.
just reads about other people's observations and discoveries
D.
comes up with solutions in a most natural way
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的___________，加入抗生素是为了____________________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入...
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he______.
A.
just reads about other people's observations and discoveries
B.
comes up with solutions in most natural ways
C.
has a great deal of trouble doing mental arithmetic
D.
lacks some of the qualities required of scientist
查看完整题目与答案
【单选题】According to the passage, which of the following is a supposition rather than a fact concerning the queen in a naked mole rat colony?
A.
She is the largest member of the colony.
B.
She exerts chemical control over the colony.
C.
She mates with more than one male.
D.
She attains her status through aggression.
E.
She is the only breeding female.
查看完整题目与答案
【多选题】细胞系的维持必须注意( )。
A.
做好细胞系的档案记录
B.
遵从细胞生长的规律传代、换液
C.
防止细胞间交叉污染
D.
及时冻存防丢失
查看完整题目与答案
【多选题】急性淋巴细胞白血病经诱导治疗达到 CR 后
A.
必须进行强化巩固和维持治疗
B.
需要注意中枢神经系统白血病的预防
C.
有条件者行造血干细胞移植
D.
可以继续观察
E.
Ph 染色体阳性者可继续口服 TKI 治疗
查看完整题目与答案
【单选题】M: What happened to you? You are so late W: The bus I took broke down in front of the hospital, and I had to walk from there Why was the woman so late?
A.
Something went wrong with the bus
B.
She took somebody to hospital
C.
She didn’t catch the bus
D.
She started too late
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的__________，加入抗生素是为了__________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入早期胚胎的囊胚腔，通过...
查看完整题目与答案
【单选题】Which of the following sentences is an opinion rather than a fact?
A.
Hundreds of occupational names are at once familiar to us.
B.
Blackand 'White' implied'dark' and 'fair' respectively.
C.
Vocational names carry with them a certain gravity and dignity.
D.
Every place in England has given its name to a family.
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______.
A.
has a great deal of trouble doing mental arithmetic
B.
comes up with solutions in a most natural way
C.
lacks some of the qualities required of a scientist
D.
just reads about other people’s observations and discoveries
查看完整题目与答案
相关题目：
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______. ( )
A.
has a great deal of trouble doing mental arithmetic
B.
lacks some of the qualities required of a scientist
C.
just reads about other people's observations and discoveries
D.
comes up with solutions in a most natural way
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的___________，加入抗生素是为了____________________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入...
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he______.
A.
just reads about other people's observations and discoveries
B.
comes up with solutions in most natural ways
C.
has a great deal of trouble doing mental arithmetic
D.
lacks some of the qualities required of scientist
查看完整题目与答案
【单选题】According to the passage, which of the following is a supposition rather than a fact concerning the queen in a naked mole rat colony?
A.
She is the largest member of the colony.
B.
She exerts chemical control over the colony.
C.
She mates with more than one male.
D.
She attains her status through aggression.
E.
She is the only breeding female.
查看完整题目与答案
【多选题】细胞系的维持必须注意( )。
A.
做好细胞系的档案记录
B.
遵从细胞生长的规律传代、换液
C.
防止细胞间交叉污染
D.
及时冻存防丢失
查看完整题目与答案
【多选题】急性淋巴细胞白血病经诱导治疗达到 CR 后
A.
必须进行强化巩固和维持治疗
B.
需要注意中枢神经系统白血病的预防
C.
有条件者行造血干细胞移植
D.
可以继续观察
E.
Ph 染色体阳性者可继续口服 TKI 治疗
查看完整题目与答案
【单选题】M: What happened to you? You are so late W: The bus I took broke down in front of the hospital, and I had to walk from there Why was the woman so late?
A.
Something went wrong with the bus
B.
She took somebody to hospital
C.
She didn’t catch the bus
D.
She started too late
查看完整题目与答案
【简答题】下图表示利用胚胎干细胞(ES细胞)所作的一系列研究，请据图分析回答： (1)过程Ⅰ将胚胎干细胞置于γ射线灭活的鼠胎儿成纤维细胞的饲养层上，并加入动物血清、抗生素等物质，维持细胞不分化的状态。在此过程中，饲养层提供干细胞增殖所需的__________，加入抗生素是为了__________，这对于研究细胞分化和细胞凋亡的机理具有重要意义。 (2)过程Ⅱ将带有遗传标记的ES细胞注入早期胚胎的囊胚腔，通过...
查看完整题目与答案
【单选题】Which of the following sentences is an opinion rather than a fact?
A.
Hundreds of occupational names are at once familiar to us.
B.
Blackand 'White' implied'dark' and 'fair' respectively.
C.
Vocational names carry with them a certain gravity and dignity.
D.
Every place in England has given its name to a family.
查看完整题目与答案
【单选题】The author says that he is a naturalist rather than a scientist probably because he thinks he ______.
A.
has a great deal of trouble doing mental arithmetic
B.
comes up with solutions in a most natural way
C.
lacks some of the qualities required of a scientist
D.
just reads about other people’s observations and discoveries
查看完整题目与答案
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