When (heat) _________ iron can be changed into liquid.
The old lady was immediately sent to a nearby hospital when she ______ from heat stroke.
A.passed away
B.passed off
C.passed out
D.passed by
A.direction
B.intention
C.intensity
D.heat
When a material burns in the air, heat is released and new substances are______.
A.separated
B.ruined
C.formed
D.dissolved
A.latent heat of condensation
B.latent heat of vaporization
C.latent heat of saturation
D.sensible heat of condensation
A.A.heats
B.B.is heated
C.C.will heat
D.D.will be heated
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