【单选题】在控制电路设计中,通常根据实验要求正确选择滑线式变阻器的参数,利用的物理原理是
【单选题】听力原文: Thirty-four patients died and two were injured early yesterday when a fire broke out in a 15sychiatric hospital in the town of Nonsan. A police spokesman told reporters there were 41 patients in...
【单选题】最大极限尺寸与基本尺寸的代数差称为( )。
【判断题】最大极限尺寸与基本尺寸的代数差称为上偏差。
【判断题】最大极限尺寸与基本尺寸的代数差称为上偏差。