A: Good hardness
B: Good heat resistance
C: Light
D: Thin
E: Good impact resistance
举一反三
- Which of the following is not the reason why concrete needs reinforcement? A: Reinforcement has good tensile resistance, while concrete has good compressive resistance. B: Reinforcement has good compressive resistance as concrete. C: Engineers prefer ductile failure to brittle failure of the members. D: Reinforcement and concrete can work together to increase the bearing capacity of the members.
- Due to its good heat resistance ,when cutting with carbide tools, generally do not add cutting fluid
- The hardness, wear resistance and heat resistance of cemented carbide are higher than that of high-speed steel.
- The advantages of cotton include: A: high level of moisture absorption B: moderate strength ,good abrasion resistance •and good dimensional stability C: resists sunlight and heat well D: soft hand feel
- Which of the following are characteristics of the steel structure? A: High strength and low weight B: Good plasticity and toughness C: Easy to manufacture and construct D: Weak corrosion resistance
内容
- 0
The properties of cast irons are as follows except . A: good castability B: poor mechanical properties C: good abrasion resistance D: poor machinability
- 1
Which of the following in not a good proof to show that Mr. Holland is a good teacher or a good father?
- 2
Which of the following does not belong to concrete durability.（） A: resistance to freezing and thawing B: thermal shock resistance C: chloride resistance D: chemical resistance
- 3
What sets ceramics apart is their set of properties common to nearly all forms.Those properties are （） A: extreme hardness B: heat resistance C: corrosion resistance D: electrical and thermal conductivity E: low ductility F: brittleness
- 4
原文:Such materials are characterized by good insulation and high resistance to wear. 译文:这些材料的特点是:绝缘性好。