8086/8088与外设进行数据交换时,经常会在( )状态后进入等待周期。
A.T1
B.T2
C.T3
D.T4
参考答案:C
尿Bence-Jones蛋白可见于()
A.多发性骨髓瘤
B.巨球蛋白血症
C.原发性淀粉样变性
D.恶性淋巴瘤
E.肾盂肾炎
For each blank, choose the best answer from the four choices and write down on the answer sheet.
(1) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.
(2) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.
(3) is an approach preferred by cable TV providers. In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable.
(4) is a device used to connect two separate network that use different communication protocol.
(5) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.
4()
A.Router
B.Gateway
C.Bridge
D.Hub