【单选题】听力原文:M: Yes, madam. What seems to be the problem? W: I'd like to report a robbery. It's my ear. It's been stolen. What's probably the man's occupation?
【单选题】听力原文:M:Please show me your driver's license,Madam。 W:What's the problem,officer? Q:What's the possible relationship between these two speakers? (9)
B.
Manager and secretary.
C.
Police officer and driver.
【简答题】一个关系模式R属于1NF, 且每一个非主属性( )依赖于任何一个候选码,则R属于2NF:
【简答题】求满足下式的 x,y,z X Y Z + Y Z Z ────── 5 3 2 main() { int x,y,z,i,result =532; for (x=1; (1) ;x++) for (y=1; (2) ;y++) for ( (3) ; (4) ;z++) { i= (5) +(100*y+10* z+z ); if (i==result) printf ("x=%d, ...
【单选题】What‘s the man‘s problem? 查看材料
A.
He is too late to work.
B.
The bed was bought ten days ago.
C.
He can't get his money back.
D.
The bed can be returned.
【简答题】从原则上说,( )适用于各个行业和专业领域的安全生产工作。
【单选题】若关系模式R∈1NF,且每一个非主属性完全函数依赖于码,则R∈
【单选题】若关系模式R∈1NF,且每一个非主属性完全函数依赖于码,则
【单选题】原则上说,( )适用于各个行业和专业领域的安全生产工作
【单选题】从原则上说,()适用于各个行业和专业领域的安全生产工作。