更多"myTable=New System.Data.DataTable（）"的相关试题:
[单项选择] 以下语句执行后myTable的名称是（）。 Dim myTable as DataTable myTable=New System.Data.DataTable（）
A. Table1
B. Table2
C. TableN
D. Nothing
[单项选择]有说明语句double[，] tab=new double[3，4]；那么下面叙述正确的是（）。
A. tab是一个数组维数不确定的数组，使用时可以任意调整
B. tab是一个有两个元素的一维数组，它的元素初始值分别是3，4
C. tab是一个二维数组，它的元素个数一共有12个
D. tab是一个不规则数组，数组元素的个数可以变化
[填空题]机械式衡器称重是基于静力或力矩平衡原理，称出的时物体的（）量；而使用称重传感器的电子秤，是将力值转换成了电量，称出的是物体的（）量，其结果与测量处的重力加速度有关。
[单项选择]若定义TAB DW 1，2，3，4，执行MOV AX，TAB[2]指令后，AX寄存器中的数据是 ( )。
A. 0200H
B. 0002H
C. 0403H
D. 3
[多项选择]Which two statements are correct about routing tables in JUNOS?（）
A. There are separate tables for IPv4 and IPv6 called inet.0 and inet6.0 respectively.
B. They only contain the best possible route to each destination.
C. All running protocols can populate the routing tables at the same time.
D. Routes with the highest preference value are placed as active routes in the routing table.
[单项选择]The following triggers were defined for table TAB1 in the order shown:CREATE TRIGGER trig_a AFTER UPDATE ON tab1 FOR EACH ROW UPDATE sale_tab SET sale_date = CURRENT DATE; CREATE TRIGGER trig_b AFTER UPDATE ON tab1 FOR EACH STATEMENT UPDATE invoice_tab SET invoice_date = CURRENT DATE; CREATE TRIGGER trig_c AFTER UPDATE ON tab1 FOR EACH ROW UPDATE shipping_tab SET ship_date = CURRENT DATE; CREATE TRIGGER trig_d AFTER UPDATE ON tab1 FOR EACH STATEMENT UPDATE billing_tab SETbilling_date = CURRENT DATE;If an event occurs that causes all of them to activate, which trigger will be activated first?（）
A. TRIG_A
B. TRIG_B
C. TRIG_C
D. TRIG_D
[单项选择]在下列查询语句中，与SELECT TAB1．* FROM TAB1 WHERE InStr([简历]，"篮球")<>0 功能相同的语句是
A. SELECT TAB1．* FROM TAB1 WHERE TAB1．简历Like "篮球"
B. SELECT TAB1．* FROM TAB1 WHERE TAB1．简历Like "*篮球"
C. SELECT TAB1．* FROM TAB1 WHERE TAB1．简历Like "*篮球*"
D. SELECT TAB1．* FROM TAB1 WHERE TAB1．简历Like "篮球*"
[单项选择]中国传统戏曲的表演体系的专称是（）
A. 戏剧
B. 中国戏剧
C. 戏曲
D. 传奇
[单项选择]Which J-Web tab do you use to add licences to the device?（）
A. "Configure"
B. "Troubleshoot"
C. "Monitor"
D. "Maintain"
[单项选择]The new policy may have protected the new city from being polluted as well as the life of its residents ______.
A. affected
B. affecting
C. is affected
D. having affected
[单项选择]为窗体上的控件设置“Tab”键顺序时，应设置控件属性表的哪一项标签的“Tab键次序”选项( )。
A. 格式
B. 数据
C. 事件
D. 其他
[单项选择]当用户按Tab键离开文本框时，将激发( )事件
A. FocusEvent
B. WindowEvent
C. ActionEvent
D. 以上都不是
[单项选择] Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）
A. SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2
B. SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2
C. SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 <> r2
D. SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
[多项选择] Examine the SQL statements that creates ORDERS table: CREATE TABLE orders (SER_NO NUMBER UNIQUE, ORDER_ID NUMBER, ORDER_DATE DATE NOT NULL STATUS VARCHARD2(10) CHECK (status IN ('CREDIT','CASH')), PROD_ID_NUMBER REFERENCES PRODUCTS(PRODUCT_ID), ORD_TOTAL NUMBER, PRIMARY KEY (order id, order date)); For which columns would an index be automatically created when you execute the aboveSQL statement? （）
A. SER_NO
B. ORDER_ID
C. STATUS
D. PROD_ID
E. ORD_TOTAL
F. Composite index on ORDER_ID and ORDER_DATE
