A. Graphite B. Silicon C. Phosphorus D. Sulfur 相关知识点: 试题来源: 解析 A。题目中描述的元素是非金属且是良好的电导体。硅是半导体不是良好导体。磷和硫都是非金属但不是电导体。而石墨是非金属且是良好的电导体。反馈 收藏
Non-metals are natural elements which do not have metallic properties. Often, they are available in the solid or gaseous state. In this type of elements, bromine is an exception as it exists in liquid state. They are good insulators of electricity and heat, non-lustrous (iodine is an excep...
metals and non-metals . the classification is largely based on the chemical properties which are common among the divisions. we will also talk about the third category of elements, called the metalloids. table of contents recommended videos what are metals? what are non-metals? what are ...
High tension (High voltage) electrostatic separator is an dry separating equipment in the high voltage electric field, which eliminate the mineral according to the differences of materials electricity nature.It adopts the different electrical property of all mi...
which allows it maintain metallic conductivity and could be printed in any shape by a brush or a pen as well (Fig. 1a, c) [41] [42], which is a simpler method for preparing circuits and electronic products. Len et al. prepared LM nanoparticles, and flexible superconducting micro-nano ...
second and third antennas corresponding to an angle of 120 degrees, andwherein said switching circuit is configured to:couple the RFID chip to that among the first, second and third antenna (51,52,53) which has a higher voltage, in which said switching circuit decouples the other two antenna...
A method of fabricating an interconnect structure is provided which includes providing a dielectric material having a dielectric constant of about 3.0 or less and at least one conductive material embedded therein, the at least one conductive material has an upper surface that is coplanar with an upp...