非附着菌斑中优势细菌为()
A.金黄色葡萄球菌
B.革兰阴性能动菌
C.革兰阴性厌氧菌
D.变形链球菌
E.放线杆菌
参考答案:C
When I was in primary school, I was told that the earth ______around the sun.
A.had travelled
B.would travel
C.travels
D.travelled
总线复用方式可以()。
A.提高总线的传输宽度
B.增加总线的功能
C.减少总线中信号线的数量
D.提高CPU利用率