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【多选题】
在 Excel2010中,下列关于自动填充的描述中,正确的是()A.
初值为纯数字型数据时,左键拖动填充柄,填充自动增1的序列
B.
初值为纯数字型数据时,按住Cr键,左键拖动填充柄,填充自动增1的序列
C.
初值为日期型数据时,左键拖动填充柄为复制填充
D.
初值为日期型数据时,按住Ctrl键,左键拖动填充柄为复制填充
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【单选题】Definition of M icrofilament ( )
A.
It is a major site in which t he γ-tubulin s combine with several other associated proteins to act as a scaffold for α - β tubulin dimers during the nucleation process .
B.
It is a cytoskeletal component composed of a family of related proteins sharing common structural and sequence features , which are cytoplasmic and nuclear localization .
C.
It is composed of a double-helical polymer of the protein actin, and play s a key role in virtually all types of contractility and motility within cells.
D.
It comprise s a superfamily of ATP -dependent motor proteins which are responsible for actin -based motility.
E.
It is composed of three distinct types of fibrous structures: microtubules, intermediate filaments, and microfilaments, which participate in a number of cellular activities.
F.
It is a protein belonging to a class of motor proteins found in eukaryotic cells . Most of them walk towards the positive /minus end of a microtubule .
G.
It is a family of cytoskeletal motor proteins that move toward the microtubules' plus end .
【单选题】Definition of M yosin
A.
It is a major site in which t he γ-tubulin s combine with several other associated proteins to act as a scaffold for α - β tubulin dimers during the nucleation process .
B.
It is a cytoskeletal component composed of a family of related proteins sharing common structural and sequence features , which are cytoplasmic and nuclear localization .
C.
It is composed of a double-helical polymer of the protein actin, and play s a key role in virtually all types of contractility and motility within cells.
D.
It comprise s a superfamily of ATP -dependent motor proteins which are responsible for actin -based motility.
E.
It is composed of three distinct types of fibrous structures: microtubules, intermediate filaments, and microfilaments, which participate in a number of cellular activities.
F.
It is a protein belonging to a class of motor proteins found in eukaryotic cells . Most of them walk towards the positive /minus end of a microtubule .
G.
It is a family of cytoskeletal motor proteins that move toward the microtubules' plus end .
【单选题】Definition of M ycoplasma
A.
It is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.
B.
It is the smallest and simplest self-replicating prokaryote.
C.
It is an irregularly shaped region within the cell of a prokaryote that contains all or most of the genetic material .
D.
C ells have a cell nucleus and other organelles enclosed within membranes .
E.
It is folded invaginations in the plasma membrane of bacteria .
【单选题】Which one of the following provides the best definition of an 'audit trail'?______.
A.
The marks left by an auditor when a document has been inspected
B.
The working papers of an auditor
C.
The pursuit of a fraud by an auditor
D.
The trail of a transaction from source document to financial statement
【简答题】为了使滤波电路的输出电阻足够小,保证负载电阻变化时滤波特性不变,应选用 滤波电路
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