余华的小说创作大体经历了“暴力化叙事”和“世俗化叙事”两个时期。请简要说明各时期的主要特点和作品(各说出一二即可)。
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近红外光是指介于可见光和中红外光之间的电磁波,波长(),有机物在该区的近红外光谱吸收,主要是含氢基团(OH,CH,NH,SH,PH)等的倍频和合频吸收。
A. 800~2600nm
B. 500~2300nm
C. 700~2500nm
D. 600~2400nm
You are using Recovery Manager (RMAN) with a recovery catalog to back up your production database. Thebackups and the archived redo log files are copied to a tape drive on a daily basis. Because of media failure,you lost your production database completely along with the recovery catalog database.You want to recover the target database and make it functional. You consider performing the following steps to accomplish the task: 1) Restore an autobackup of the server parameter file. 2) Restore the control file 3) Start the target database instance 4) Mount the database 5) Restore the data files 6) Open the database with RESETLOGS option 7) Recover the data files 8) Set DBID for the target database Which option illustrates the correct sequence that you must use?()
A. 8,1,3,2,4,5,7,6
B. 1,8,3,4,2,5,7,6
C. 1,3,4,2,8,5,6,7
D. 1,3,2,4,6,5,7,8
在()情况下,应进行船舶保安检查。 ①公司保安员要求实施对本船的保安评估,以修订船舶保安计划; ②船舶即将航行于保安风险较大的水域,船长或船舶保安员认为有必要时; ③每半年定期进行。
A. ①③
B. ①~③
C. ①②