单选题：carbohydrate的意思是（ ）。
单选题：The term specific strength means ( ).
单选题：In a solid solution, solute atoms substitute for lattice atoms. The type of this solid solution is ( ).
单选题：A silicon crystal doped with boron creates a p-type semiconductor. This doping is known as ( ).
单选题：Ferroelectricity of donor-doped barium titanate ceramics is lost at a certain temperature, and this temperature is called ( ).
单选题：PTC ceramics have a （ ） resistance at ordinary temperatures.
单选题：Titanium alloys are virtually （ ） to air, marine, and a variety of industrial environments.
With the increase of temperature, the（ ）of an NTC ceramic decreases.
A material consists of particles with a certain composition, and can be（ ）into products having shapes and colors.
The chemicals react ( ) a high reacting rate.
单词 upcycling 意思是 ( )。
“透明性” 与 “氧化硅” 两个词表述都正确的是 ( )。
表述 “最新工艺” 的词汇应是 ( )。
“green ceramic” 的意思是 ( )。
合成词 limestone 的意思是 ( )。