某高速公路上下行分离式隧道,洞口间距40m,左线长3216m,右线长3100m,隧道最大埋深500m。进出口为浅埋段,I

某高速公路上下行分离式隧道,洞口间距40m,左线长3216m,右线长3100m,隧道最大埋深500m。进出口为浅埋段,IV级围岩,洞身地质条件复杂,地质报告指出

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If a teacher gets an incorrect answer from students, it is m

If a teacher gets an incorrect answer from students, it is most appropriate for

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Student: I'm very down. My dad get seriously ill last week,a

Student: I'm very down. My dad get seriously ill last week,and I'm ...Teacher:

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Manufacturers think polyester bottles are better than glass

Manufacturers think polyester bottles are better than glass bottles because they

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