To build a system for low-carbon economic development, the ways include ( ). A: building a mechanism for development of low-carbon energy technology B: building a mechanism for eco-environmental compensation C: building a mechanism for certification of low-carbon products D: building a mechanism for constraining carbon emission

Low carbon transition is beneficial to carbon reduction and pollution improvement. However, it would be harmful to the economic development. True or false?

are very soft ,and can be used for bolts and for machine parts that do not need strength.: Alloy steels|High carbon steels|Low carbon steels|Medium carbon steels

Annealing and normalizing present a significant difference on the ductility of low carbon steels.​

中国大学MOOC: Which of the following CANNOT be considered low carbon activities?

If the carbon content of a type of steel is 0.1%， this steel is a kind of （ ）. A: low-carbon steel B: medium-carbon steel C: high-carbon steel D: HTLA steel

Low carbon life is a green lifestyle that Low carbon life is a green lifestyle that A．improves human’s responsibility. B．supports low energy consumption. C．hopes to change the environment. D．slows down human’s pace of life. A: improves human’s responsibility. B: supports low energy consumption. C: hopes to change the environment. D: slows down human’s pace of life.

中国大学MOOC: Annealing and normalizing present a significant difference on the ductility of low carbon steels.

Annealing and normalizing present a significant difference on the ductility of low carbon steels. A: 正确 B: 错误

Which of the following means low carbon dioxide? A: acpnia B: hypoxia C: dyspnea D: hypocapnia