A. select id, score from student group by id,score; B. select id, sum(score) from student group by id; C. select sum(score) from student group by id; D. select id, score from student group by id;
A. Quick Switch B. Switch Smart C. Flash Back D. Switch Turbo
A. select staff_id id from staffs; B. select staff _id as id from staffs; C. select staffl_id id from staffs; D. select staff_id id from staffs;
A. TRUE B. FALSE
A. display ospf p四r B. displayip ospf peer C. display ospf neighbor D. display ip ospf neighbo