When installing a security system, which of the following connectors would be used to connect the security system to the telephone service demarcation?()
A、RJ-31x
B、RJ-11
C、RS-232
D、DB-9
有以下程序: #include main() { int k=-17; printf("%d,%o,%x",k,1-k,1-k); } 程序的运行结果是( )。
A、-17,22,12
B、-17,12,22
C、-17,-22,-l2
D、17,22,12
BSC程序数据加载前,要检查BAM的Dload目录下的文件是否齐全,除了AM/CM和BM各单板需要的加载程序和数据文件外,下列哪几个文件还是必须的:()
Afsk.dat
BmodutypE.str
Cloadtemp.dat
Ddb_0.dat
Which two statements regarding the FLASHBACK_TRANSACTION_QUERY view are correct?()
AYou can find information about only active transactions from the view
BYou can find information about read only transactions from the view
CYou require the SELECT ANY TRANSACTION system privilege to access the view
DYou can find information about both active and committed transactions from the view
EYou require the SELECT ON FLASHBACK_TRANSACTION_QUERY object privilege to access the view
You explicitly specified the tablespace usage threshold values while creating a tablespace. You need to revert to the database-wide default tablespace usage threshold values for the tablespace. Which PL/SQL package would you use?()
A、DBMS_STATS
B、DBMS_ALERT
C、DBMS_SPACE
D、DBMS_MONITOR
E、DBMS_SERVER_ALERT
F、DBMS_SPACE_ADMIN
若有定义int a;float b;double c;程序运行时输入:3 4 5能把值3输入给变量a、4输入给变量b、5输入给变量C的语句是( )。
A、scanf("%lf%lf%lf",&a,&b,&c);
B、scanf("%d%lf%lf",&a,&b,&c);
C、scanf("%d%f%f",&a,&b,&c);
D、scanf("%d%f%lf",&a,&b,&c);