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【判断题】
LD和LDI分别取常开和常闭触点,并且都是从输入公共线开始。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】________ is known to the world, Mark Twain is great American writer. A) That B) Which C) As D) It
【单选题】The second paragraph means that _______.
A.
only students from China study at the top universities
B.
no other students but Japanese and Chinese students study at the top universities
C.
Chinese students often fight against Japanese students
D.
famous universities in the United States attract more Chinese students
【单选题】At the class meeting, some top students introduced several ________ to the study of English. [ ]
A.
approaches
B.
means
C.
metho ds
D.
ways
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