下列标准代号中,属于国家强制性标准的为()。 ["GB","GB/T","DB","QB"]
癫痫发作不包括() ["强直一阵挛发作","强直性发作","失神发作","精神症状发作","不典型发作"]
基因治疗时,理想载体应具有下列特点() ["A.靶向特异性","B.高度稳定性","C.无毒性","D.结构复杂性","E.有利于基因高效转移和长期表达"]
复层鳞状上皮由表层向内的排列顺序为() ["颗粒层、角化层、棘层和基底层","角化层、颗粒层、棘层和基底层","颗粒层、棘层、角化层和基底层","基底层、棘层、颗粒层和角化层","基底层、角化层、棘层和颗粒层"]
领导者在工作中应该注意要:() ["为目的而工作","为感觉而工作","为金钱而工作","为生存而工作"]
多参数调节系统