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【单选题】
下列关于单层厂房构件的说法错误的是A.
抗风柱一般可按受弯构件或者偏心受压构件计算
B.
圈梁宜连续地设在同一水平面上，并形成封闭圈
C.
基础梁底部应和地基土紧密接触，使基础梁受到地基土的有效约束
D.
连系梁的作用除连系纵向柱列、增强厂房的纵向刚度并把风荷载传递到纵向柱列外，还承受其上部墙体的重力
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【简答题】Translate the following English into Chinese. Although the cytoskeleton provides some stability to cells, its microtubules and filaments and their associated proteins enable cells to move by creeping ...
【简答题】Basal bodies that organize the microtubules within cilia and flagella are believed to be derived from ( ).
【判断题】The microtubules and microfilaments of the cytoskeleton are dynamic polymers that are subject to shortening, lengthening, disassembly, and reassembly.
A.
正确
B.
错误
【单选题】The general functions of ( ) is to increase the stabiliy of microtubules and to promote microtubule assembly.
A.
MTOC
B.
MAP
C.
G-actin
D.
lamina
【简答题】简述地形图中符号按地图要素的分类。
【单选题】Which of the following are characteristics common to all three cytoskeletal systems (microfilaments, microtubules and intermediate filaments)?
A.
are reorganized during mitosis.
B.
have attachment sites for motor proteins.
C.
are highly dynamic.
D.
possess inherent polarity.
【简答题】请将 “ 练习题讲义 ” 中的 “ 练习2 ” 部分各题的答案写下来。
【单选题】When a cell has differentiated into a specialized cell type, the dynamic instability of its microtubules is often ___________ by proteins that bind to the ends or the sides of the microtubules and pro...
A.
augmented
B.
balanced
C.
suppressed
D.
promoted
【单选题】Despite these slight differences in operation, cilia and flagella share a similar internal structure. The microtubules in both cilia and flagella are arranged in an elaborate and distinctive pattern. ...
A.
7
B.
9
C.
11
D.
13
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