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【单选题】
光电传感器的基本原理是物质的( )A.
压电效应
B.
光电 效应
C.
磁电效应
D.
．热电效应
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反馈参考答案：
举一反三
【单选题】All books are cataloged according to
A.
the author's name.
B.
the subject matter.
C.
the publisher.
D.
the title.
【单选题】--- __________ ? --- They are my books. [ ]
A.
What are these
B.
What’s this
C.
What’s your name
【简答题】xml sss
【简答题】A．Copies down the name and the address of each borrower. B．Checks all books for missing pages. C．Decodes the books as they are checked out. D．Helps students use the card catalog.
【简答题】连词成句。 1. books, many, How (?) ___________________________________ 2. name, Jenny, is, her (.) ___________________________________ 3. is, desk, this, a (.) ___________________________________ 4. is, na...
【单选题】The real name of the author of the two books is ______.
A.
Alice
B.
Lewis Garroll
C.
Charles Carroll
D.
Charles Lutwidge Dodgson
【简答题】Many authors use a false name when they publish their books．
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