信号的基本颜色为红色、绿色和() ["A、兰色","B、白色","C、黄色","D、紫色"]
先天性聋哑的致病根本原因是() ["近亲结婚","基因突变","染色体异常","基因重组"]
下列哪项不是常用的整形外科成形术()。 ["A、“Z”成形术","B、“O”成形术","C、“多个连续Z”成形术","D、“W”成形术","E、“V-Y”成形术"]
首先提出“优生学”一词的学者是() ["达尔文","高尔顿","孟德尔","摩尔根"]
钨极氩弧焊焊接()接头,氩气保护效果最佳。 ["搭接","T型","角接"]
()是药物生产技术的基础和依据。工艺路线的()和()是衡量生产技术高低的尺度。