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【判断题】
影响数字声音质量的主要因素有3个,即:采样频率、量化位数和声道数。
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】聚合酶链式反应(polymerase chain reaction,PCR)
【简答题】聚合酶链反应(polymerase chain reaction, PCR)
【简答题】聚合酶链式反应(PCR,polymerase chain reaction)
【判断题】药品应当按照国家药品标准和经药品监督管理部门核准的生产工艺进行生产。
A.
正确
B.
错误
【多选题】按剪纸作品分类以下正确的是()
A.
单色剪纸
B.
折叠剪纸
C.
彩色剪纸
D.
立体剪纸
【多选题】按剪纸作品分类以下正确的是( )
A.
折叠剪纸
B.
单色剪纸
C.
彩色剪纸
D.
立体剪纸
【简答题】Why did the writer and his family choose to live in the country? Do you think their dream has come true? Why?
【简答题】Why did the writer and his family choose to live in the country? Do you think their dream has come true? Why?
【单选题】Why does the writer suggest that you put yourself in the other side's position?
A.
because they may have lied about what they want
B.
in order to avoid being trapped into making a deal you cannot change
C.
because it is likely that they have more to offer than you do
D.
in order to be able to see your real value to them
【单选题】Enzymes necessary for the Polymerase Chain Reaction (PCR) include:
A.
Restriction enzyme, DNA ligase.
B.
Primers, DNA polymerase.
C.
DNA polymerase.
D.
DNA polymerase, DNA ligase.
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