PART ONE 取浓度相同的NaOH和Hcl,以3：2体积比相混合,所得溶液的PH等于12,则原溶液浓度为?求详细的解

几个有关计算机基础的题目!
英文的,有关硬件的,但都很简单,不懂的别瞎凑合,好的+分!
Part One :Term matching （术语匹配）
a) Translates the processed information from the computer into a form that humans can understand.
b) Translates data and programs that humans can understand into a form that the computer can process.
c) Holds to data and program instructions for processing data.
d) This is the number of bits that can be accessed at one time by the CPU.
e) A CPU can only read,or retrieve,programs written on this type of memory chip.
f) This type of memory is volatile,and all data stored in this fashion are lost when the computer is turned off.
g) It contains essential information that is required every time the computer system is turned on.
h) These plug into slots inside the system unit and allow the user to expand the computer's capabilities
i) Memory used to store the most frequently accessed information stored in RAM.
j) A data roadway between various system components along which bits travel.
Terms
1.input device
2.output device
3.word size
4.RAM
5.memory
6.expansion card
7.CMOS
8.bus
9.ROM
10.cache
Part Two Multiple choice （单选）
1 Computers are electronic devices that accept instructions,process input,and produce 【 】.
a.information
b.prewritten programs
c.data
d.system software
2 Which is Also called temporary storage,its contents will be lost if electrical power is disrupted or cut off 【 】.
a.secondary storage
b.basic tools
c.memory
d.hard disk
3 The ALU performs arithmetic operations and 【 】.
a.reduced instruction calculations
b.logical operations
c.parity checks
d.binary calculations
d.Unicode
4 CPU performances are measured by the following standards except 【 】.
a.Clock rate
b.Word size
c.Cache
d.Resolution
5 What are the two steps of a machine cycle 【 】.
a instruction cycle and execution cycle
b .reading cycle and writing cycle
c Controling cycle and calculating cycle
d processing cycle and saving cycle
Part Three Things to think about :
If you were to purchase a personal computer today ,what type of processor would it have ,why and why do people upgrade their processors instead of buying a new computer

"写在前面"用英语怎么说?
主要是写一篇文章的时候
"..."这里用英文写什么?
第一部分"part one"
第二部分"part two"
...
最后一部分"end"

大家好 请帮忙点评一下 BEC 中级的作文谢谢了, part one !
To: All staff
from: derek
Subject: computer system
I have just been informed the computer system will be down on next wednesday 1
o'clock Pm ,it will be down for at least 3 hours, so please make sure that all works are done before 1 pm, hope the computers will run faster than they used to be.
Thanks