下面何种选择征描述的是热雷暴?() ["沿山脉走向成行出现","范围小,孤立分散,雷暴云间有间隙","与天气系统一起移动"]
硅材料PN结的结压降为()V。 ["0.3","1","0.7","2"]
ISMP上需要为以下哪些设备分配鉴权批价接口?() ["ISAG","WAP网关","WAP门户","彩信中心"]
在强雷暴云下,下降的冷气流与上升的暖气流之间的分界面称(). ["飑","飑线","飑锋"]
中温回火在()之间进行。 ["150-250度","350-500度","500-650度"]
什么是机动车?