实例初始化块是在该类的构造方法之后执行的。

A、对

B、错

EXHIBIT, Emp Table Exhibit A Exhibit B Examine the data from the EMP table. Evaluate this SQL statement: SELECT * FROM emp WHERE emp _ id = 3); WHERE commission = (SELECT commission FROM emp What is the result when the query is executed?（）

A、 Exhibit A

B、 Exhibit B

C、 The query returns no rows

D、 The query fails because the outer query is retrieving more than one column

E、 The query fails because both the inner and outer queries are retrieving data from the same table.

温切斯特技术是目前制造硬盘的常用技术。

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

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

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