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【判断题】
集成三端稳压器CW7805的输出电压为+5V。A.
正确
B.
错误
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举一反三
【多选题】According to the discussion, in what two ways was the Federal Art Project successful? Choose 2 answers.
A.
It established standards for art schools.
B.
It provided jobs for many artists.
C.
It produced many excellent artists.
D.
It gave many people greater access to the arts.
【单选题】What does the passage mainly discuss?
A.
States' rights versus federal rights.
B.
The participation of state governments in railroad, canal, and turnpike construction.
C.
The roles of state and federal governments in the economy of the nineteenth century.
D.
Regulatory activity by state governments.
【简答题】DNA样品的均一性越高,其溶解过程的温度范围越_____
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