长度相等的弧是等弧.(  )

长度相等的弧是等弧.(  )

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设三位数2a3加上326,得另一个三位数5b9,若5b9能被9整除,则a+b等于( ).

设三位数2a3加上326,得另一个三位数5b9,若5b9能被9整除,则a+b等于( ). A.2 B.4 C.6 D.8

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( )既是注册消防工程师步人行业的“通行证”,又是具体行业立足的基础。

( )既是注册消防工程师步人行业的“通行证”,又是具体行业立足的基础。 A.维护公共安全原则 B.诚实守信原则 C.依法执业原则 D.公平竞争原则

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Where does this conversation most probably take place?

Where does this conversation most probably take place?A.In a library. B.In a hos

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What is the probable relationship between the speakers?

What is the probable relationship between the speakers? A.Strangers. B.Neighbors

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