A. UM1=UM2 B. UM1>UM2 C. UM1 D. 不确定 查看完整题目与答案 大接地电流系统发生金属性短路故障,对于故障支路的负序电流,在()情况下负序电流最大。 A. 单相接地短路 B. 两相短路 C. 两相接地短路 D. 三相短路 查看完整题目与答案 在电网中,经方向的过流保护是为了保证动作的()...
The microRT subsystem design utilizes a 320kVp orthovoltage source with dual focus spots (0.4×0.4 mm2 at 800W and 1×1 mm2 at 1800 W). The orthovoltage beam is collimated using two orthogonal jaws and exchangeable apertures. The resolution of the cone‐beam micro CT and the therapy beam...
Length Constant Value: A value, measured in picofarads (pF) per foot or meter appears in the bottom of the LCD display screen. This value corre sponds to the selected cable type and can be adjusted at any time. When viewing the length constant value for a cable type, the "C" icon ...