A.15minB.15min或產(chǎn)生嚴(yán)重滲漏為止C.30minD.30min或產(chǎn)生嚴(yán)重滲漏為止
A.1000Pa≤ΔP< 1500PaB.1500Pa≤ΔP< 2000PaC.500Pa≤ΔP< 700PaD.700Pa≤ΔP< 1000Pa
A.1200PaB.1250PaC.1333PaD.1500Pa