在Java语言中,不能注释多行内容的符号是()。
A、以//开始的注释
B、以/*开始,*/结束的注释
C、以/**开始,*/结束的注释
D、以上都不能
Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace()
AThe retention period to support flashback
BThe expected length of the longest-running query
CThe number of undo tablespaces in the database
DThe size of the Flash Recovery Area for the database instance
A user’s laptop does not produce sound even though the volume settings are at maximum in theoperating system. Which of the following would MOST likely resolve this issue?()
A、A new sound card
B、A new speaker
C、A BIOS update
D、A hardware volume control
实例初始化块是在该类的构造方法之后执行的。
A、对
B、错
以下关于精简指令集计算机(RISC)指令系统特点的叙述中,错误的是()。
A、对存储器操作进行限制,使控制简单化
B、指令种类多,指令功能强
C、设置大量通用寄存器
D、选取使用频率较高的一些指令,提高执行速度
What is the binary equivalent of 242.168.94.124?()
A、11110011 10101000 01011110 01111100
B、11110010 10101010 01011110 01111100
C、11110010 10101000 01011110 01111100
D、11110010 10101000 01010110 01111100