深静脉血栓形成的最大危险}生是
A. 水肿
B. 肺栓塞
C. 下肢坏死
D. 患肢增粗
E. 浅静脉扩张
Protons and neutrons are known as______
A. Electrons
B. Neutrinos
C. Nucleons
D. Quarks
Write out the Gibbs phase rule, and specify the meaning ofthe symbols in it.
A field that involves the generation and application of knowledge relating to the composition, structure and processing of materials to their properties and use.
A. Engineering Materials Technology
B. Materials Engineering
C. Materials Science
D. Materials ScienceAnd Engineering