【判断题】people worship at the ovoo and Shangxin Mod the by making offerings of alcohol , dairy products and fruits.
【简答题】心室肌细胞的静息电位与____的平衡电位基本相等,0期去极化主要由____内流形成,1期复极化主要由____失活和____短暂外流相等所致,平台期是由于____携带的外向电流和____携带的内向电流大致相等所致,3期复极化的主要原因是由于____完全失活而____外流逐渐增强。
【多选题】心室肌细胞生物电活动的特征是:
D.
平台期由Ca2+、Na+内流及K+外流所形成
【判断题】The trees that they are usually very large sometime they have the colored hadags rapped around them or hanging from the branches, these trees are called Shangxin Mod.
【多选题】(202-U4)下面关于封装的说法哪些正确?
A.
针脚插装(PTH)的特点是插孔安装到PCB上
B.
表面贴装封装的主要特点是引线代替针脚,表面贴装技术改变了传统的PTH插装形式,通过细微的引线将集成电路贴装到PCB板上。
【判断题】people worship at the ovoo and Shangxin Mod the by making offerings of alcohol , dairy products and fruits.