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【多选题】
继电器的基本功能有()。A.
可以用较小功率的电信号控制继电器动作，由继电器控制较大功率的执行设备动作。
B.
可以用继电器组成结构复杂的逻辑电路
C.
可将控制信号传送到接收端进行放大，动作执行继电器，实现远程控制
D.
可以实现自动控制
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皮皮学刷刷变学霸
举一反三
【单选题】Where is the A-D-A gene taken from in Caskey's experiment?
A.
human blood
B.
human bone marrow
C.
mouse blood
D.
mouse bone marrow
【单选题】Where does the woman want to study music?
A.
At the Royal Academy of Music in Paris.
B.
At the Royal Academy of Music in London.
C.
At the Royal Academy of Music in Tokyo.
D.
At the Royal Academy of Music in Moscow.
【单选题】—_______ do you like music?—Because my favorite subject is music.
A.
What
B.
When
C.
Why
D.
Where
【简答题】The courses offered by summer school in music where a friendly atmosphere reigns last ________________________
【单选题】According to the passage, which of the following statements is true?
A.
Students' cheating has deep social roots.
B.
Students do not cheat on essay tests.
C.
Reform. in the testing system will eliminate cheating.
D.
Punishment is an effective method to stop cheating.
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