膨润土中金属氧化物遇水后能离解出大量的离子，使膨润土的自然电阻率呈现出较低的数值。()

对于含有大规模集成电路的微电子设备，进出设备的信号线和电源线屏蔽层在其进出口处应与设备的金属外壳保持良好的电气接触。() 点击查看答案&解析

He doesn't think his math teacher is good. He thinks that his teaching is dull and interesting.() 点击查看答案&解析