Which of the following properties or characteristics are inc

Which of the following properties or characteristics are inconsistent with the metals (more than one)?
A good thermal conductivity
B high strength
C.high electrical resistivity
D.high stiffness
E.ionic bonding
The predominant phase in the iron-carbon alloy system for a composition with 99% Fe at room
temperature is which of the following?
A.austenite
B.cementite
C.delta
D.ferrite
E.gamma
第一题我选过B D E和D E 都错的，第二题选过C D也都错了呀。