11 .Silk ___ by Chinese for thousand of years now.(2 分)A.has usedB.has been usedC.was usedD.is used12 .Sorry I can’t answer your question.I know ___ about the subject.(2 分)A.a littleB.someC.littleD.few13 .Although Mary is satisfied with her success,she wonders ___ wi...
We review how the function of a material system at the macroscale can be derived from the interplay of fundamental molecular building blocks. Moreover, guidelines and approaches to current experimental and computational designs in the field of synthetic silk-like materials are provided to assist the...
The quality of spun silk is slightly inferior to reeled silk in that it is a bit weaker and it tends to become fuzzy. The waste material from the spun silk can also be used for making "waste silk" or "silk noil." This coarse material is commonly used for draperies and upholstery. ...
"Stone shadow carving doesn't require many tools. They can take the slates home, do the work, take care of their families and generate income at the same time," Li said, adding she now enrolls more than 30 students every year. "My deceased father would be pleased to know that I am...
What caused the silk the scientists produced to be less strong than spiders'? E. The machine used to produce the silk. F. The wrong process. G. The material used to make the silk. . The amount of some material.( )3. Which can be put back into the blank? . How do spiders use ...
In many Asian countries, firewood is the chief fuel used for cooking and heating, which has caused uncontrolled clear-cutting of forests in dryland ecosystems. When too many trees are cut down, windstorms and dust storms tend to occur.F What’s worse, even political conflicts and wars can ...
Brocade can feature a wide variety of base materials. Silk is the traditional fiber used for brocade fabric manufacture, but during periods of reduced silk imports, Western brocade weavers made do with wool. As cotton imports from India became more common during the Enlightenment period, brocade ...
Learn more This could also be interesting for you: Braun Silk-épil epilators Look and feel beautiful with irresistibly smooth skin for up to 4 weeks. Learn more Braun Silk-expert Pro IPL The only IPL with an intelligentSensoAdapt™ skin tone sensor. ...
In this method, a carrier provides you a fixed IP address or IP address segment. You can enter the IP address or IP address segment on an AR router and perform some simple configurations to access the Internet. Fixed IP addresses are expensive and usually used in enterprises that need to ...
Starting a fashion line can be quite difficult especially if you are doing it for the first time. As a creative person, you can have great ideas about how to create something that you love that fits your needs and others like you. But this is not enough. There are a lot of practical...