Tenor is a term widely used in sociolinguistics to refer to varieties according t 24. Tenor is a term widely used in sociolinguistics to refer to varieties according to use. ()
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】两个共点力的大小分别为 F 1 = 15N , F 2 = 9N ,它们的合力不可能等于( )