AXE810设备框中的板除SCP，XDB主备板放于机框的两边，其它作主备用的板，主备板相隔（）个槽位.
参考答案：11
单词填空。
1. This is an _________ (古老的) custom.
2. The _________ (志愿者) for community service are doing a good job.
3. He made a _________ (定期的) visit to his parents.
4. This store often __________ (要价,索费) only 65 US cents a dozen for large eggs.
5. The theater _________ (容纳) 1000 people.
6. The death of her son gave her infinite p________.
7. Our position is h_________; we'll never get out alive.
焊接缺陷的种类可分为（）
A、表面缺陷
B、未焊透
C、夹渣
D、气孔
