同一认定与种属认定的基本步骤是什么?
蚊虫进入人房吸血后,稍停息,仍飞往野外的,是() ["家栖性蚊虫","半家栖性蚊虫","野栖性蚊虫"]
上行链路自适应包括:() ["自适应发射带宽,","发射功率控制,","自适应调制和信道编码率,","自适应天线选择性发射分集"]
苦参抗肿瘤作用环节不包括() ["A、诱导癌细胞凋亡","B、促进癌细胞分化","C、抑制癌细胞DNA合成","D、干扰转录过程阻止RNA合成"]
上行功控的目的是() ["补偿路损,","补偿阴影余量,","抑制小区干扰,","降低手机发射功率"]
什么叫粗苯蒸馏脱苯?