关于BMW 6HP变速器在D挡踩住刹车停车状态时液力变矩器的正确说法（） ["泵轮转，涡轮不转","泵轮转，涡轮不转，导轮反方向转","泵轮转，涡轮也转，有转速差","泵轮转，涡轮也转，无转速差"]
农村信用社发行“62”开头的银联标准卡，可在境内外带有“银联”标识的ATM和特约商户办理取款、查询和消费等业务。
Cyclones tend to move（）. ["perpendicular to the isobars in their warm sectors","parallel to the isobars in their warm sectors","parallel to the line of the cold front","perpendicular to the line of the cold front"]
Cumulonimbus clouds can produce（）. ["dense fog and high humidity","gusty winds，thunder，rain or hail，and lightning","clear skies with the approach of a cold front","a rapid drop in barometric pressure followed by darkne"]
第三代移动通信系统空中接口采用的多址技术是（）。 ["FDMA","TDMA","CDMA","OFDM"]
什么叫自感和互感？
