【单选题】The head of the shop came ___ to see ___.
A.
up; what was the matter
B.
up; what the matter was
C.
along; what’s the matter
D.
down; what the matter was
【简答题】What happened to the carwhen the man came back? wasbadly damaged.
【判断题】在MySQL关系模型中,连接运算是在两个关系中选择满足连接条件的元组,组成一个新关系。
【多选题】以下人物中,哪些是李白《蜀道难》提到的古蜀王?
【单选题】健身房的多功能健身器材,能够实现多种训练项目,属于什么原理?( )
【单选题】关系模型的“连接运算”是对( )的运算.