锅炉的严重事故是指()。 ["A、死亡1-2人","B、直接经济损失50-100万元设备事故","C、受伤20-49人","D、受伤19人以下"]
可用于治疗肾炎的药物是() ["麻黄","桂枝","柴胡","细辛","葛根"]
工业锅炉的基本工作参数如蒸发量() ["A、比热","B、温度","C、压力","D、流量","E、密度"]
下列可引起中枢神经系统兴奋的药物是() ["麻黄","桂枝","柴胡","细辛","葛根"]
MIMO模式中分集与复用之间的切换主要取决于:() ["接收信噪比,","信道相关性,","RSRP,","天线个数"]
什么是言词证据与实物证据?