超星 - 单元四-热处理 - 查题吧

单选题

Which one is not the heat treatment of metal?

A. quench
B. tempering
C. annealing
D. shaping

单选题

In order to make metal becoming softer and much easier to machine, （）is a good heat treatment.

A. quench
B. annealing
C. tempering

单选题

We can make steel harder by ( )

A. quench
B. annealing
C. tempering
D. normalizing

单选题

The purpose of tempering is to ( )

A. make steel softer
B. make steel harder
C. relieve the internal stresses

单选题

Which speed of cool is the fastest?

A. quench
B. annealing
C. tempering

多选题

The heat treatment includes :

A. annealing
B. quench
C. tempering
D. shaping

多选题

Shaping operations of metal include :

A. casting in moulds
B. forging
C. squeezing
D. bending

多选题

Anealing has two advantages,

A. relieve internal stress
B. make metal softer
C. make metal harder
D. make metal cracking

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