Sunday, April 14, 2024
Thursday, July 20, 2023
Thursday, February 15, 2024
Saturday, March 23, 2024
问题:简述CCWE1500系列风力发电机组的组成部分。...
Friday, March 8, 2024
问题:信号继电器动作后()。A、继电器本身掉牌或灯光指示B、应立即接通灯光音响回路C、应是一边本身掉牌,一边触点闭合接通其它信号...
Saturday, March 23, 2024
Sunday, April 14, 2024
Monday, May 29, 2023
Sunday, February 25, 2024
Friday, March 8, 2024
问题:钳型电流表的工作原理是()A、静电感应;B、电磁感应;C、趋肤感应...
Thursday, December 14, 2023
问题:一经合闸即可送电到工作地点或施工设备的开关和刀闸的操作把手上应悬挂()标示牌A、禁止合闸,线路有人工作;B、禁止合闸,有人工作;C、在此工作...
Monday, January 30, 2023
问题:旭阳调试液压站时,需要设定的上限(),下限().偏航伴压刹车的伴压为()...
Sunday, February 25, 2024
问题:我国规定安全电压额定值有42V.36V.()V.12V.6VA、30;B、24;C、16...
Friday, March 8, 2024
问题:变频器按照主电路工作方式分类,可以分为()变频器和()变频器。...
Friday, August 18, 2023
Sunday, February 25, 2024
问题:风机布线时应做到()A、拉近节省用线量;B、留余量越多越好;C、平直整齐,穿越金属口时必须套上保护物...
Thursday, February 15, 2024
问题:在一个小的封闭的环境,在没有使用氧气罩时,切不可使用()...
Friday, March 8, 2024
问题:风能的大小与风速的()成正比A、平方;B、立方;C、四次方;D、五次方...
Sunday, February 25, 2024
问题:图纸代号为F12.2在图纸上第()页,第()个区域。...
Thursday, February 15, 2024