HDLC是一种______协议。
A.面向比特的同步链路控制 B.面向字节计数的异步链路控制C.面向字符的同步链路控制 D.面向比特流的异步链路控制
参考答案:A
弗洛伊德把人的意识分为()
A、意识
B、前意识
C、潜意识
D、后意识
"Do you regret paying five hundred dollars for the painting ""No, I would gladly have paid______for it. "
A.twice so much
B.twice as much
C.as much twice
D.so much twice