错义突变(mis—sense mutation)
练习瑜伽时下列哪种呼吸方法最好() ["鼻子呼吸","嘴巴呼吸","深呼吸","腹式呼吸"]
斗轮堆取料机斗传输线装置应()测试调整一次,检查输入主轴与轴承的配合紧力应为()。 ["每季度0.005?.015mm","半年0.005?.015mm","半年0.05?.15mm","每年0.05?.15mm"]
()是实现堆取料机堆取作业转换的机构。 ["变幅机构","斗轮装置","尾车","回转装置"]
基因突变(gene mutation)
如何理解“动力学结炭”?一般发生在什么条件下?