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【简答题】
一、名词解释: 核酸的变性与复性( denaturation 、 renaturation ) 退火( annealing ) 增色效应( hyper chromic effect ) 减色效应( hypo chromic effect ) DNA 的熔解温度 分子杂交 二、与计算 1 、 影响 DNA Tm 值大小的因素有哪些?为什么? 2 、 两个来自细菌的未知的 DNA 样品,各含 32 %和 17 %的 A 。那个样品的 Tm 值如果两种细菌中有一个是嗜热菌,哪种菌应该是嗜热菌?
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参考答案：
举一反三
【单选题】做简谐运动的物体,当它们每次经过同一位置时,不可能相同的物理量是
A.
位移
B.
回复力
C.
加速度
D.
速度
查看完整题目与答案
【判断题】染色体是遗传基因的载体。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the Bertrand model
A.
one firm plays a leadership role and its competitors willingly follow
B.
each firm takes the prices charged by its competitors as given
C.
each firm takes the quantities produced by its competitors as given
D.
prices are higher and quantities are slightly less than we would see if the firms colluded to achieve the monopoly outcome
查看完整题目与答案
【单选题】Which of the following statements is FALSE?
A.
For capital budgeting purposes, the project’s financing is the incremental financing that results if the firm takes on the project.
B.
Projects with safer cash flows can support more debt before they increase the risk of financial distress for the firm.
C.
If the positive free cash flow from a project will increase the firm's cash holdings, then this growth in cash is equivalent to a reduction in the firm’s leverage.
D.
The incremental financing of a project corresponds directly to the financing that is directly tied to the project.
查看完整题目与答案
【单选题】下列关于染色体、DNA和基因的描述，错误的是：
A.
染色体在细胞核里
B.
基因是遗传物质的载体
C.
DNA是主要的遗传物质
D.
染色体是由DNA和蛋白质组成的双螺旋长链
查看完整题目与答案
【单选题】For the firm in the real intertemporal model with investment
A.
depreciation occurs more quickly if the firm produces more output.
B.
depreciation takes place at a constant rate.
C.
depreciation can be slowed with more maintenance.
D.
depreciation is always 100%.
查看完整题目与答案
【判断题】铺台布时要求凸缝、图案、纵向缝对正、副主人位。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】用他人借书卡借书的处理办法怎样呢?
A.
违者除责成转借者和借用者检讨外，将停用借阅权限一个月
B.
转借者还须承担由此引起的一切后果，如超期罚款、滞纳金、赔书等后果；
C.
冒用他人校园卡入馆借阅书刊，当即收回该证，并酌情处罚。
查看完整题目与答案
【判断题】铺台布时要求凸缝、图案、纵向缝对正、副主人位。() prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the Stackelberg model
A.
each firm takes the prices charged by its competitors as given
B.
one firm plays a leadership role and its competitor's simply react to the leader's quantity
C.
each firm takes the quantities produced by its competitors as given
D.
prices are higher and quantities are slightly less than we would see if the firms colluded to achieve the monopoly outcome
查看完整题目与答案
相关题目：
【单选题】做简谐运动的物体,当它们每次经过同一位置时,不可能相同的物理量是
A.
位移
B.
回复力
C.
加速度
D.
速度
查看完整题目与答案
【判断题】染色体是遗传基因的载体。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the Bertrand model
A.
one firm plays a leadership role and its competitors willingly follow
B.
each firm takes the prices charged by its competitors as given
C.
each firm takes the quantities produced by its competitors as given
D.
prices are higher and quantities are slightly less than we would see if the firms colluded to achieve the monopoly outcome
查看完整题目与答案
【单选题】Which of the following statements is FALSE?
A.
For capital budgeting purposes, the project’s financing is the incremental financing that results if the firm takes on the project.
B.
Projects with safer cash flows can support more debt before they increase the risk of financial distress for the firm.
C.
If the positive free cash flow from a project will increase the firm's cash holdings, then this growth in cash is equivalent to a reduction in the firm’s leverage.
D.
The incremental financing of a project corresponds directly to the financing that is directly tied to the project.
查看完整题目与答案
【单选题】下列关于染色体、DNA和基因的描述，错误的是：
A.
染色体在细胞核里
B.
基因是遗传物质的载体
C.
DNA是主要的遗传物质
D.
染色体是由DNA和蛋白质组成的双螺旋长链
查看完整题目与答案
【单选题】For the firm in the real intertemporal model with investment
A.
depreciation occurs more quickly if the firm produces more output.
B.
depreciation takes place at a constant rate.
C.
depreciation can be slowed with more maintenance.
D.
depreciation is always 100%.
查看完整题目与答案
【判断题】铺台布时要求凸缝、图案、纵向缝对正、副主人位。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】用他人借书卡借书的处理办法怎样呢?
A.
违者除责成转借者和借用者检讨外，将停用借阅权限一个月
B.
转借者还须承担由此引起的一切后果，如超期罚款、滞纳金、赔书等后果；
C.
冒用他人校园卡入馆借阅书刊，当即收回该证，并酌情处罚。
查看完整题目与答案
【判断题】铺台布时要求凸缝、图案、纵向缝对正、副主人位。() prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the Stackelberg model
A.
each firm takes the prices charged by its competitors as given
B.
one firm plays a leadership role and its competitor's simply react to the leader's quantity
C.
each firm takes the quantities produced by its competitors as given
D.
prices are higher and quantities are slightly less than we would see if the firms colluded to achieve the monopoly outcome
查看完整题目与答案
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