丢失学生证重新补办后，12个月内不售给学生票。（）
乳中酪蛋白在酸或皱胃酶作用下产生（） ["溶解","凝固","结晶"]
燃烧室
Users on the 172.17.22.0 network cannot reach the server located on the 172.31.5.0 network.The network administrator connected to console port,issued the show ip route command,and was able to ping the server.Based on the output of the show ip route command topology shown in the graphic,what is the cause of the failure?（） ["IP routing is not enabled","A static route is configured incorrectly","The network has not fully converged","The FastEthernet interface on Coffee is disabled","The routing table on Coffee has not updated","The neighbor relationship table is not correctly updated"]
荷马史诗反映了（）时期古希腊的社会生活。 ["奴隶制社会","原始公社制向奴隶社会制过渡","奴隶制向封建社会过渡","原始公社制"]
某32×2.5G工程为一链型组网，发端OTU使用TWC，收端OTU使用RWC，这时测试MPI-R点λ1的光信噪比，结果为为17dB，RWC一直有少量误码产生。后用LWC代替TWC和RWC，λ1这波业务不再上报误码。为什么？
