Communicating means to share ( ) with others by speaking. A、data B、information C、knowledge D、idea 喵查答案:information ……继续阅读 »
( ) of light in solar cells generates electron–hole pairs. A、Reflection B、Refraction C、Absorption D、Scattering 喵查答案:Absorption ……继续阅读 »
The main disadvantage of C/C composites is their low ( ) resistance. A、corrosion B、high-temperature C、oxidation D、friction 喵查答案:oxidation ……继续阅读 »
多选题:The objectives of presentation to persuade are: ( ). A、to explain a new concept B、to convince audience to take action C、to describe a technical concept D、to suggest an approach to a problem 喵查答案:to convince audience to take action to……继续阅读 »
单选题:单词homogeneity 的反义词是 ( )。 A、nonuniform B、heterogeneity C、inhomogeneous D、uneven 喵查答案:heterogeneity ……继续阅读 »
单选题:In polycrystalline ceramics, the resistance of ( ) is higher than that of grains. A、pores B、liquid phase C、grain boundary D、solid phase 喵查答案:grain boundary ……继续阅读 »
单选题:Thermoplastics require to make them formable and after cooling, ( ) the shape they were formed into. A、retain B、remain C、keep D、have 喵查答案:retain ……继续阅读 »
单选题:UHPC exhibits excellent rheological behaviors, improved in mechanical and ( ) performance with very high compressive strength, and non-brittleness behavior. A、durability B、chemical C、physical D、formability 喵查答案:durability ……继续阅读 »
The metals and ceramics have a similar structural feature on the atomic scale: they are ( ), which means that their constituent atoms are stacked together in a regular, repeating pattern. A、amorphous B、crystalline C、solids D、noncrystalline 喵查答案:crystalline ……继续阅读 »
In a glass, short-range order is retained, long-range order is ( ). A、remained B、present C、kept D、lost 喵查答案:lost ……继续阅读 »
The central feature of crystalline structure is that it is regular and ( ). A、random B、unordered C、repeating D、amorphous 喵查答案:repeating ……继续阅读 »
Ferroelectricity of donor-doped barium titanate ceramics is lost at a certain temperature, and this temperature is called ( ). A、the critical temperature B、the Curie temperature C、the glass transition temperature D、the melting point 喵查答案:the Curie temperature ……继续阅读 »
A silicon crystal doped with boron creates a p-type semiconductor. This doping is known as ( ). A、donor doping B、acceptor doping C、adding impurities D、addition doping 喵查答案:acceptor doping ……继续阅读 »
In a solid solution, solute atoms substitute for lattice atoms. This solid solution is ( ). A、interstitial solid solution B、substitutional solid solution C、alloy D、either substitutional solid solution or interstitial solid solution 喵查答案:substitutional solid solution ……继续阅读 »