下列现象不属于利用大气压强的是（ ）A．用吸管吸饮料B．倒置装满水的杯子，盖杯口的硬纸片不掉下来C 下列生活现象中，不属于利用大气压的是（ ）A．用吸管吸饮料...
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A、用吸管吸饮料的原理是：先把吸管内的空气吸走，在外界大气压的作用下，汽水被压进吸管里，利用了大气压强；B、倒置装满水的杯子，盖杯口的硬纸片不掉下来，在纸片的周围只有空气，所以是大气压力的作用使其没有掉下来，利用了大气压强；
C、活塞式抽水机抽水，就是利用大气压强把水压上来的；
D、船闸是连通器的知识，利用了液体的压强．
故选D．
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绛旓細D
