酸碱槽车进厂后应取样检验。用压缩空气顶压卸车时，顶压的压力不准超过槽车允许的压力。 严禁在带压下开启法兰泄压。 无送气门、 空气门的槽车和不准承压的槽车，都禁止用压缩空气顶压卸车。
1、正确正确
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Johnhardlyspeakstoanybodyintheclass,________________?
Sincethepremiumvarieswiththescopeof____extrapremiumisforbuyer'saccount,shouldadditionalsiskecovered?()
Accordingtotheshipping_____itwillbeimpossibleforustoshipthegoodsinOctober.()
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JeanWagner’mostsenduringcontributiontothestudyofAfro-Americanpoetryishisinsistencethatit________inareligious,aswellasworldly,frameofreference.
