AutoCAD中,可用()消隐操作将隐藏被前景对象遮掩的背景对象,从而使图形的显示更加简洁,设计更加清晰。
A、变量ISOLINES
B、变量FACETRES
C、变量DISPSILH
D、命令HIDE
You executed the following FLASHBACK TABLE command: FLASHBACK TABLE emp TO TIMESTAMP (’11:45’,’hh12:mi’); Which two statements are correct? ()
AThe FLASHBACK TABLE statement will not be written to the alert log file.
BThe EMP table that was dropped by mistake from the database will be restored.
CThe changes made to the EMP table since the specified time will be undone.
DThe FLASHBACK TABLE statement will not maintain the existing indexes on the EMP table.
EThe FLASHBACK TABLE statement will be executed within a single transaction.
FThe list of transactions that have modified the EMP table since the specified time will be displayed.
You executed the following code: SQL> CERATE TABLE COUNTRY (COUNTRY_ID CHAR(2) CONSTRAINT COUNTRY_ID_nn NOT NULL, COUNTRY_NAME VARCHAR2(20), CURRENCY_NAME VARCHAR2(20), CONSTRAINT COUNTRY_ID_PK PRIMARY KEY (COUNTRY_ID)) ORGANIZATION INDEX; Which types of tables will be created automatically?()
A、 journal table
B、 clustered table
C、 mapping table
D、 partitioned table
设窗体上有一个名为Text1的文本框和一个名为Command1的命令按钮,并有以下事件过程:程序运行时,如果在文本框中输入-5,则单击命令按钮后的输出结果是( )。
A、5
B、20
C、25
D、输入错误
Given: What is the result?()
A、 test
B、 Exception
C、 Compilation fails.
D、 NullPointerException
下列方法中,属于白盒法设计测试用例的方法的是( )。
A、错误推测
B、因果图
C、基本路径测试
D、边界值分析