WhatisLEASTlikelytocauseignitionoffuelvapors?（）.
A. Staticelectricity
B. Anopenrunningelectricmotor
C. Loosewiring
D. Explosionprooflights
Afirestartingbyspontaneouscombustioncanbeexpectedinwhichcondition?（）
A. Paints，varnish，orotherliquidflammablesarestowedinadrystoreslocker
B. Inertcargoessuchaspigironareloadedinawetcondition
C. Oilyragsarestowedinametalpail
D. Cleanmattressesarestoredincontactwithanelectriclightbulb
Avesseltransferringprovisionsorcargoatseashalldisplayduringtheday（）.
A. twoblackballsinaverticalline
B. threeblackballsinaverticalline
C. threeshapesinaverticalline；thehighestandlowestshallberedballsandthemiddleawhitediamond
D. threeblackshapesinaverticalline；thehighestandlowestshallbeballsandthemiddleoneadiamond
零售药店必须采购处方药和非处方药，以下说法错误的是（）
A. 从具有《药品经营许可证》的药品批发企业采购
B. 从具有《药品生产许可证》的药品生产企业采购
C. 对采购记录必须留存2年以上备查
D. 对处方必须留存2年以上备查
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