问题
选择题
Scientists have made a________in the search for a cure for cancer.[ ]
A. expectation
B. breakthrough
C. regulation
D. procedure
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Scientists have made a________in the search for a cure for cancer.[ ]
A. expectation
B. breakthrough
C. regulation
D. procedure
答案：B
填写路由器RG中相关的路由表项
| 目的网络/掩码长度 | 输出端口 |
| ______ | S0(直接连接) |
| ______ | S1(直接连接) |
| ______ | S0 |
| ______ | S1 |
| ______ | S0 |
| ______ | S1 |