【简答题】如果有语句 int a=2,b=-3,c=4; 则表达式 b%=c+a-c/7 的值是()
【单选题】在 HTML 中, 点击图片”previous.gif”上的超级链接后页面将加载历史列表中的上一个URL 页面。 代码如下所示, 应在下划线处填入()
B.
”javascript:history.go(-1)”;
E.
“javascript:history.go(1)”
【单选题】( )误差具有偶然性,不能事先知道因而不能从根本上消除。
【多选题】The session of user SCOTT receives the following error after executing an UPDATE command onthe EMP table: ERROR at line 1: ORA-00060: deadlock detected while waiting for resource On investigation, ...
A.
The session is terminated after receiving the error and JIM can continue with his transaction.
B.
SCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.
C.
The session is rolled back after receiving the error and JIM can continue with his transaction.
D.
SCOTT has to reexecute the last command in the transaction after he commits the transaction.
【简答题】在软件配置发布中,基线版本、 和修订版本被人为是三种主要类型的发布
【多选题】The session of user SCOTT receives the following error after executing an UPDATE command on the EMPtable: ERROR at line 1: ORA-00060: deadlock detected while waiting for resource On investigation, you...
A.
The session is terminated after receiving the error and JIM can continue with his transaction.
B.
SCOTT should perform a COMMIT or ROLLBACK to allow JIM to continue with his transaction.
C.
The session is rolled back after receiving the error and JIM can continue with his transaction.
D.
SCOTT has to reexecute the last command in the transaction after he commits the transaction.
【单选题】在 HTML 中, 点击图片”previous.gif”上的超级链接后页面将加载历史列表中的上一个URL 页面。 代码如下所示, 应在下划线处填入()
A.
”javascript:history.go(-1)”;
D.
“javascript:history.go(1)”
【单选题】Using FTP passive mode, after the opens thecommand channel (port 21) to the FTP server and requests passive mode, what will be the next step? ()
A.
The FTP server sends back an acknowledgment (ACK) to the
B.
The FTP server allocates a port touse for the data channel and transmit that port number to the
C.
The FTP server opens the data channel to the using the port number indicated by the
D.
The FTP opens the data channel to the FTP server on Port 20
E.
The FTP opens the datachannel to the FTP server on Port 21