国家秘密级测绘成果保密期限（） 长期。 5年。 10年。 30年。
If DB2 detects a deadlock between application A and application B (each waiting for a lock held by the other one), what action will DB2 take?（） Rollback the transaction in both applications.。 Rollback the transaction in one of the two applications.。 Decrease the lock timeout value for both applications, thereby causing a lock timeout situation.。 Send a message to let the administrator know of the situation and decide which application or applications should be terminated.。
室外埋地敷设的电缆导线，应采用管壁厚度不小于（）的电线管。 1mm。 1.5mm。 2mm。 2.5mm。
A user has written a script that is not running correctly and asks an administrator for help. Without adding anything to the script, how can the administrator determine the cause of the problem?（） Run the script with an 'sh -x' in front.。 Run the script with a 'ksh -v' in front.。 Type debug into the command line before running the script.。 Type 'set -x' into the command line before running the script.。
磁带格式3592 和 LTO 哪种是开放技术的（） LTO。 MagStar。 两者都是。 两者都不是。
下列哪种税种既有比例税率也有定额税率（）。
