题目内容

Whic one is not the machinablity characteristics?哪个不属于机械特性？

A. strength
B. hardness
C. toughness
D. denstiy

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更多问题

Which metals could be use to conductor wire?哪些金属可以做导线？

A. Copper
B. Aluminium
C. Lead
D. Steel

Some elements are good for making steel stronger and tougher , they are:有些元素有利于增强钢的强度和韧性，是：

A. S
B. Mn
C. Si
D. P

The commonprocessmethods of material forming include :常见的材料加工方法包括：

A. bending
B. cutting
C. grinding
D. milling

Non-metallic materials include：非金属材料包括：

A. Fiber
B. Plastic
C. Nylon
D. Zinc