Which is a restriction on a list partitioned table?()
User A issues the command: LOCK TABLES pets READ; Which command can User B execute against the pets table?()
Have you got a table for four, Waiter?()
What is the result of executing a TRUNCATE TABLE command on a table that has Flashback Archivingenabled?()
A PL/SQL procedure queries only those columns of a redefined table that were unchanged by the online table redefinition. What happens to the PL/SQL procedure after the online table redefinition?()
When adjusting a magnetic compass for error,a deviation table should be made().
A user needs to create a trigger that will update table T2 whenever a row is added to table T1. Assuming the user has all appropriate privileges for table T2, which privilege is required on table T1 to create the trigger?()
Which three statements inserts a row into the table?()
Which is a valid CREATE TABLE statement? ()
Plan a table / table a plan: ___________________
This is a ______table.
– Have you got a table for four, Waiter? – ().
<table><tbody><tr><td>碳酸钠俗称纯碱,碳酸钠属于()<table><tr><td>A.酸</td><td>B.碱</td><td>C.盐</td><td>D.氧化物</td></tr></table></td></tr></tbody></table></body>
<table><tbody><tr><td>四大洋中面积最小的大洋是()<table><tr><td>A.A</td><td>B.B</td><td>C.C</td><td>D.D</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>世界上最大半岛上面积最大的国家是()<table><tr><td>A.埃及</td><td>B.印度</td><td>C.沙特阿拉伯</td><td>D.伊朗</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>下列不是广州别称的是()<table><tr><td>A.春城</td><td>B.羊城</td><td>C.花城</td><td>D.穗城</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>下列不属于三大丘陵的是()<table><tr><td>A.淮阳丘陵</td><td>B.辽东丘陵</td><td>C.山东丘陵</td><td>D.东南丘陵</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>A.世界最高的山脉 ①马来群岛
<table><tbody><tr><td>食醋的主要成分是()<table><tr><td>A.乙酸</td><td>B.乙醇</td><td>C.油脂</td><td>D.苯</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>经线的形状是()<table><tr><td>A.圆</td><td>B.点</td><td>C.半圆</td><td>D.椭圆</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>氢氧化钠的俗名是()<table><tr><td>A.烧碱</td><td>B.纯碱</td><td>C.食盐</td><td>D.小苏打</td></tr></table></td></tr></tbody></table></body>
<table><tbody><tr><td>The medicine has a good effect to me</td></tr></tbody></table>
<table><tbody><tr><td>关于大气压的说法正确的是()<table><tr><td>A.大气压的值总是恒定不变的</td></tr><tr><td>B.离地面越高,大气压越大</td></tr><tr><td>C.离地面每升高12米,大气压就一定下降1毫米水银柱</td></tr><tr><td>D.大气压产生的原因是因为空气有重量</td></tr></table></td></tr></tbody></table>
<table><tbody><tr><td>用反证法证明命题“设a,b∈R,|a|+|b|<1,a<sup>2</sup>-4b≥0那么x<sup>2</sup>+ax+b=0的两根的绝对值都小于1”时,应假设()<table><tr><td>A.方程x<sup>2</sup>+ax+b=0的两根的绝对值存在一个小于1</td></tr><tr><td>B.方程x<sup>2</sup>+ax+b=0的两根的绝对值至少有一个大于等于1</td></tr><tr><td>C.方程x<sup>2</sup>+ax+b=0没有实数根</td></tr><tr><td>D.方程x<sup>2</sup>+ax+b=0的两根的绝对值都不小于1</td></tr></table></td></tr></tbody></table>