A.大于實(shí)際允許工作壓力5%,但不應(yīng)超過(guò)設(shè)計(jì)壓力 B.大于實(shí)際允許工作壓力10%,但不應(yīng)超過(guò)設(shè)計(jì)壓力 C.大于實(shí)際允許工作壓力15%,但不應(yīng)超過(guò)設(shè)計(jì)壓力 D.等于設(shè)計(jì)壓力
A.導(dǎo)輪式離心泵 B.往復(fù)泵 C.螺桿泵 D.雙作用葉片泵
A.導(dǎo)輪泵在設(shè)計(jì) B.導(dǎo)輪泵在非設(shè)計(jì) C.蝸殼泵在設(shè)計(jì) D.蝸殼泵在非設(shè)計(jì)