下列___________不是矿山压力作用下的力学现象,即矿山压力显现。

下列___________不是矿山压力作用下的力学现象,即矿山压力显现。

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“在液为汗”的是( )

“在液为汗”的是( )

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Your host would like it best if you giveto him.

Your host would like it best if you giveto him.

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