在ORDER中修改NUMBER的值必须大于0。

A.修改变量number的值为0

B.判断number的值是否为0

C.比较number和0的大小

D.声明一个变量number，并初始化值为0

A、tracking number

B、contract number

C、order number

D、code number

A．They got a wrong order number from the caller.

B．They failed to deliver the computers on time.

C．They couldn't find the order form.

D．They made a wrong delivery.

A．内部查询：ORDER BY新余额DESC

B．内部查询：WHERE ROWNUM=800

C．外部查询：ORDER BY新余额DESC

D．内部查询：SELECT客户标识，新余额ROWNUM

Please mark the bales ______ the lot number as given the enclosed order sheet.

A．with, in B．with, with C．in, with D．in, in

What does the woman give the man？

A．A coupon

B．A catalog

C．A receipt

D．An order number

What information does the man give？

A．His name

B．A product code

C．His phone number

D．His order number