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Ferrous metals include iron and alloys ofat least 50% iron.
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更多“Ferrous metals include iron and alloys ofat least 50% iron.”相关的问题
第1题
FERROUS:
A．magnetic
B．rusty
C．with no iron
D．hydrated
E．non-reactive
第2题
A.Discontinuous chip
B.Discontinuous chip with BUE
C.Continuous chip
D.Continuous chip with BUE
第3题
The basic functions of the U.N. ______.
A．are limited to discussions and debates
B．are including coordinating actions where necessary
C．are only concerned with human rights
D．are economic and cultural
第4题
Almost all metals are good conductors, silver______ the best of all.
A．is
B．being
C．has been
D．is to be
第5题
第7题
Laser beams can be used to bore metals and other hard materials.
A．trim
B．melt
C．drill
D．slice
第8题
A.is a good conductor B. is a good insulator
C. are good conductors D. are good insulators
第9题
A.metals
B.composites
C.polymers
D.alloys
第10题
A.industrially polluted soils
B.rock and soil chemistry
C.naturally polluted soils
D.the pathways of metals into the food chain
E.the element of iodine
F.the persistence of heavy metals
