皮皮学，免费搜题
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【单选题】
下列项目中，属于劳务报酬所得的有（ ）
A.
发表论文取得的报酬
B.
到某高校讲学取得的报酬
C.
翻译作者将国外的作品翻译出版取得的报酬
D.
高校里教师受出版社委托进行审稿取得的报酬
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皮皮学刷刷变学霸
举一反三
【单选题】( ) is the most abundant organic molecule providing the fibrous component of the plant cell wall.
A.
cellulose
B.
protein
C.
pectin
D.
hemicellulose
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【单选题】为让学生在课堂上积极发言,教师提出,如果学生能够做到,就减少布置作业的量,这个过程即( )。
A.
正强化
B.
负强化
C.
正惩罚
D.
负惩罚
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【判断题】一个物理或化学变化，设计成原电池，只能设计成唯一的一种。
A.
正确
B.
错误
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【单选题】About ___ cellulose molecules are held together via hydrogen bonds in a single cellulose microfibril. Cellulose microfibrils give the plant cell wall its tensile strength.
A.
10
B.
12
C.
14
D.
16
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【简答题】Describe the structure of the plant cell wall?/植物细胞壁由哪几层构成?各有何特点?
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【简答题】下列不能作为存储器容量单位的是 ( )
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【单选题】The structure of cellulose in the plant cell wall is simple: linear polymers of thousands of (β1→4)-linked D-glucose units, assembled into bundles of at least ___ chains, which co-crystallize to form ...
A.
14
B.
16
C.
18
D.
20
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【单选题】线性表使用链式存储结构时,其地址()。
A.
必须是连续的
B.
部分地址是连续的
C.
一定不连续的
D.
连续与否均可以
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【单选题】下列不能作为存储器容量单位的是 ( )
A.
Byte
B.
KB
C.
MIPS
D.
GB
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【多选题】How do cellulose microfibrils give the plant cell wall its tensile strength?
A.
Like all extracellular matrices, plant cell walls derive their tensile strength from long fibers oriented along the lines of stress.
B.
In higher plants, the long fibers are generally made from the polysaccharide cellulose, the most abundant organic macromolecule on Earth.
C.
These cellulose microfibrils are interwoven with other polysaccharides and some structural proteins, all bonded together to form a complex structure that resists both compression and tension.
D.
Other polysaccharides cross-link the cellulose microfibrils, while the polysaccharide pectin fills the spaces between the microfibrils, providing resistance to compression. The middle lamella is rich in pectin and is the layer that cements one cell wall to another.
查看完整题目与答案
相关题目：
【单选题】( ) is the most abundant organic molecule providing the fibrous component of the plant cell wall.
A.
cellulose
B.
protein
C.
pectin
D.
hemicellulose
查看完整题目与答案
【单选题】为让学生在课堂上积极发言,教师提出,如果学生能够做到,就减少布置作业的量,这个过程即( )。
A.
正强化
B.
负强化
C.
正惩罚
D.
负惩罚
查看完整题目与答案
【判断题】一个物理或化学变化，设计成原电池，只能设计成唯一的一种。
A.
正确
B.
错误
查看完整题目与答案
【单选题】About ___ cellulose molecules are held together via hydrogen bonds in a single cellulose microfibril. Cellulose microfibrils give the plant cell wall its tensile strength.
A.
10
B.
12
C.
14
D.
16
查看完整题目与答案
【简答题】Describe the structure of the plant cell wall?/植物细胞壁由哪几层构成?各有何特点?
查看完整题目与答案
【简答题】下列不能作为存储器容量单位的是 ( )
查看完整题目与答案
【单选题】The structure of cellulose in the plant cell wall is simple: linear polymers of thousands of (β1→4)-linked D-glucose units, assembled into bundles of at least ___ chains, which co-crystallize to form ...
A.
14
B.
16
C.
18
D.
20
查看完整题目与答案
【单选题】线性表使用链式存储结构时,其地址()。
A.
必须是连续的
B.
部分地址是连续的
C.
一定不连续的
D.
连续与否均可以
查看完整题目与答案
【单选题】下列不能作为存储器容量单位的是 ( )
A.
Byte
B.
KB
C.
MIPS
D.
GB
查看完整题目与答案
【多选题】How do cellulose microfibrils give the plant cell wall its tensile strength?
A.
Like all extracellular matrices, plant cell walls derive their tensile strength from long fibers oriented along the lines of stress.
B.
In higher plants, the long fibers are generally made from the polysaccharide cellulose, the most abundant organic macromolecule on Earth.
C.
These cellulose microfibrils are interwoven with other polysaccharides and some structural proteins, all bonded together to form a complex structure that resists both compression and tension.
D.
Other polysaccharides cross-link the cellulose microfibrils, while the polysaccharide pectin fills the spaces between the microfibrils, providing resistance to compression. The middle lamella is rich in pectin and is the layer that cements one cell wall to another.
查看完整题目与答案