以太网采用的通信协议是______。
参考答案:CSMA/CD
如果开发时间紧迫,是否可以跳过单元测试而直接进行集成测试?为什么?
The variation for most given areas undergoes()change,the amount of which is also noted on charts.
A.an annual
B.a constant
C.a variable
D.an unstable