Recordswhichmustberetainedonboardafterreportofcasualtytoavesselincludethe（）.
A. tourreports
B. hullreports
C. machineryrepairrecordbook
D. deckequipmentlog
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Repairofstructuresonashipinthevicinityofliquidmudhandlingareaspresentswhatpossiblehazard?（）
A. Toxicgassesmaybepresent
B. Flammablegassesmaybepresent
C. Liquidmudsmayfloodadjoiningspaces
D. Anoxygen-deficientatmospheremaybepresent
Rivetsareusuallymadeof（）.
A. wrought-iron
B. aluminum
C. high-tensilesteel
D. mildsteel
Startingmotors，generators，andothersparkproducingdevicesshouldbemountedashighabovethebilgesaspossibleto（）.
A. keepthemdrywhenthebilgesarefullofwater
B. keepthemcoolwhenthevesselisunderway
C. makethemmoreaccessibleforrepairs
D. preventaccidentalignitionofanygasolinevaporsthatmayhaveaccumulatedinthebilges
以下药物组中，不可以放于同一药斗的是（）
A. 山药片与天花粉片
B. 苍术与白术
C. 牡丹皮与赤芍
D. 生甘草与炙甘草
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