高、低压电气设备的“三大保护”是什么？
参考答案：
“三大保护”是指三短路、漏电、接地。
接触网作业车回转作业平台必须先把作业平台升起，使前端定位装置离开车棚顶支承后，方可旋转。
An analyst is doing research about a floating-rate security. All else equal, is the interest rate risk associated with a floating-rate security positively related to:()
A.
B.
C.
