A、raw metallic products
B、finished metallic products
C、consumable products
D、Manufactured goods of large Size
更多“Boilers and cylinders are（）.”相关的问题
A、lower than normal cylinder pressure and low exhaust temperature B、lower than normal cylinder pressure and high exhaust temperature C、higher than normal cylinder pressure and low exhaust temperature D、higher than normal cylinder pressure and high exhaust temperature
A、water-tube natural circulation boilers B、fire-tube boilers C、water-tube forced circulation boilers D、all of the above
A、Large crosshead type；crossheads B、High speed；the cylinders C、Large crosshead type；the cylinders D、Four-stroke；pistons and cylinders
A、bolts welded into the cylinder head B、bolts welded into the cylinder frames C、studs screwed into the cylinder head D、studs screwed into the cylinder frames
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