下列现象中,不属于利用大气压强的是(  )A.用钢笔胶管吸墨水B.船闸C.活塞式抽水机抽水D.用吸管吸

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A、钢笔吸墨水时,先将胶管中的空气尽量排出,使管内的气压小于外界大气压,墨水就在大气压的作用下进入了胶管中,故属于利用大气压强,不合题意;
B、船闸是利用了连通器的原理进行工作的,与大气压强无关,故符合题意;
C、活塞式抽水机在抽水时,抽起活塞使筒内形成暂时的真空,在大气压的作用下,水进入筒内,是利用了大气压强,不合题意;
D、用吸管吸饮料时,先吸去管中的空气,使管中形成暂时的真空,在大气压的作用下,饮料进入吸管再流入口中,不合题意.
故选B.

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