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【单选题】
在建表时如果希望某列的值在一定的范围内,什么样的约束?A.
primary key
B.
check
C.
unique
D.
foreign key
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】— What do you think of earthquake, Zhang Hong? — Terrible. people lost their hometown during the earthquake.
A.
Five thousands
B.
Thousand of
C.
Three thousands of
D.
Thousands of
【单选题】A: What happened to the priceless works of art? B: ______
A.
They were destroyed in the earthquake.
B.
The earthquake was destroying them.
C.
They destroyed in the earthquake.
D.
The earthquake destroyed them.
【多选题】下列各项税费中,不通过“营业税金及附加”科目核算的有( )。
A.
增值税
B.
企业所得税
C.
教育费附加
D.
排污费
E.
记入无形资产的土地使用权在处置时应交的土地增值税
【单选题】根据下列文章,请回答 16～22 题。 Earthquake How does an earthquake start? What makes an earthquake happen? The rock of the earth's crust (地壳) may have a'fault', a kind of break in the suce. The blocks which mak...
A.
Right
B.
Wrong
C.
Not mentioned
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