0.804保留一位小数和保留两位小数结果相同．______．（判断对错）
0.804≈0.8，
0.804≈0.80，
0.8=0.80，
故答案为：√．
Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up （71） at the customer premise over slow （72） ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet （73）technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the （74） or cable "modem" over a much faster medium such as Ethernet.It also means that multiple （75） can connect to the Internet through the same connection.
72（）
A．parallel
B．digital
C．serial
D． variable
肠内营养并发症与输入速度及溶液浓度有关的是
A．误吸B．腹胀、腹泻C．肠炎D．肠道细菌移位E．胆囊结石
