【多选题】
"CRH380A 统型动车组空调机组室外部分装有( )、气液分离器、
A. 压缩机
B. 高压开关
C. 室外热交换器
D. 室外风机
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答案
A
解析
暂无解析
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CRH380A 统型动车组转向架中心距:( )mm、固定轴距:( )mm、车轮直径:( )mm、车钩高度:( )mm。 "
A. 17,500;2,500;860;1,000" "
B. 17,000;2,500;850;1,000" "
C. 17,000;2,400;860;1,000" "
D. 17,500;2,400;850;1,000"
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"CRH380A 统型动车组牵引变压器2 次绕组侧设有 2 个线圈,1 次侧的电压为 25KV 时,2 次侧两个绕组电压不小于 1650V。另外,还设有辅助绕组,此时辅助绕组电压为 ( ) 。"
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"CRH380A 统型动车组牵引电动机为 3 相鼠笼式感应电动机,其轴端安装有速度传感器,向( )
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"CRH380A 统型动车组耐雪制动时,BC 压力设定在( )范围,通过制动控制器的开关操作可进行设定值的变更。"
A. 30±20kpa
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C. 50±20kpa" "
D. 60±20kpa"
【多选题】
"CRH380A 统型动车组救援转换装置可以读取 BP 管的压力,当 BP压力从( )开始减压时,装置将以数字信号输出符合其减压量的制动指令,制动控制装置根据制动指令产生相应的动作。" "
A. 500kPa 或600kPa" "
B. 550kPa 或600kPa" "
C. 500kPa 或550kPa" "
D. 450kPa 或500kPa"
【多选题】
"CRH380A 型动车组制动指令为缓解时(排气指令),如果 BC 压力残存在( )以上,就判断制动不缓
A. 20kPa
B. 30kPa
C. 40kPa
D. 50kPa
【多选题】
"CRH380A 统型动车组在制动控制装置内部,主风缸存储的空气经过 3/4 断气塞门、UMA 滤尘器、止回阀,连接到( )供气用储
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