问答题

Before carrying out the characterization, one vital procedure is（）

答案： A.forming
B.sampling
C.casting
D.forging
正确答案：sampling

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（）is a method of thermal analysis which measures the difference in heat flow rate between a sample and inert reference as a function of time and temperature.

答案： A.DSC
B.TG
C.RGA
D.DTA
正确答案：DSC

（）is a rapid analytical technique primarily used for phase identification of a crystalline material and can provide information on unit cell dimension

答案： A.DSC
B.DTA
C.XRD
D.IR
正确答案：XRD