给下列汉字注音并组词。奢
操作高压电器设备必须遵守的规定¬有哪些?() 操作人员必须戴绝缘手套。 操作人员可以不戴绝缘用具。 只有机电工可以操作。 变电所内应配备绝缘用具。
Examine this syntax which allocates channels during a parallel image copy: RMAN> CONFIGURE DEVICE TYPE disk parallelism 4: 2> COPY 3> datafile 1 TO ‘/BACKUP/datafile1.dbf’, 4> datafile 2 TO ‘/BACKUP/datafile2.dbf’, 5> datafile 3 TO ‘/BACKUP/datafile3.dbf; RMAN>COPY 2> datafile 4 TO ‘/BACKUP/datafile4.dbf’; How many channels are used?() 0。 1。 3。 4。
Given that the current directory is empty, and that the user has read and write permissions, and thefollowing: Which statement is true?() Compilation fails.。 The file system has a new empty directory named dir.。 The file system has a new empty directory named newDir.。 The file system has a directory named dir, containing a file f1.txt.。 The file system has a directory named newDir, containing a file f1.txt.。
离下课还有10分钟,这时候一些学生的注意力开始涣散,老师说:“如果大家认真听课,我就免去今天的额外作业”。学生开始认真听课了。老师采取的措施是() 正强化。 负强化。 惩罚。 消退。
EXCEL的工作界面不包括()。